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Add AWS Client VPN support for secure private access to code-server
This commit adds comprehensive VPN infrastructure to enable secure, certificate-based access to code-server deployments. VPN provides an additional security layer by requiring network-level authentication before accessing internal resources. Features: - AWS Client VPN endpoint with certificate-based authentication - Split tunnel support (route only VPC traffic through VPN) - CloudWatch logging for all VPN connections - Multi-platform client support (Windows, macOS, Linux, iOS, Android) - Automatic certificate generation and ACM upload - Client configuration export scripts - Integration with both EC2 and EKS deployments New Terraform Module: - modules/vpn: Complete AWS Client VPN infrastructure - VPN endpoint with configurable authentication - Network associations for HA across multiple AZs - Authorization rules for VPC access - Security groups for VPN traffic - CloudWatch log groups and streams - Support for SAML/federated authentication Scripts: - scripts/generate-vpn-certificates.sh: Generate and upload VPN certificates - Creates CA, server, and client certificates - Automatically uploads to AWS Certificate Manager - Outputs certificate ARNs for Terraform configuration - scripts/export-vpn-config.sh: Export client VPN configuration - Downloads VPN config from AWS - Embeds client certificates - Creates platform-ready .ovpn files Deployment Updates: - EC2 and EKS deployments now support optional VPN - New variables for VPN configuration - Updated outputs to include VPN endpoint information - Example configurations with VPN settings Documentation: - VPN-SETUP-GUIDE.md: Comprehensive VPN setup guide - Certificate generation process - Terraform configuration - Client setup for all major platforms - Testing and troubleshooting - Advanced configuration options - Cost considerations and optimization Configuration Options: - Certificate-based or SAML/SSO authentication - Split tunnel (recommended) or full tunnel - UDP (faster) or TCP (more reliable) transport - Configurable session timeout (8-24 hours) - Custom DNS servers - Client login banner - Multiple authorization rules Security Features: - X.509 certificate authentication - Private subnet associations - Network-level access control - Session logging and audit trail - Support for multi-factor (VPN cert + OAuth2/SAML) Cost: ~$216/month base + ~$0.40/user/day for active connections
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terraform/VPN-SETUP-GUIDE.md
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terraform/VPN-SETUP-GUIDE.md
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# AWS Client VPN Setup Guide for Code-Server
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This guide explains how to set up AWS Client VPN to securely access your code-server deployment. With VPN enabled, users must connect to the VPN before accessing code-server, adding an extra layer of security.
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## Table of Contents
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- [Overview](#overview)
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- [Why Use VPN](#why-use-vpn)
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- [Architecture](#architecture)
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- [Prerequisites](#prerequisites)
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- [Setup Steps](#setup-steps)
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- [1. Generate VPN Certificates](#1-generate-vpn-certificates)
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- [2. Configure Terraform](#2-configure-terraform)
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- [3. Deploy VPN](#3-deploy-vpn)
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- [4. Export Client Configuration](#4-export-client-configuration)
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- [5. Distribute to Users](#5-distribute-to-users)
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- [Client Setup](#client-setup)
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- [Testing VPN Connection](#testing-vpn-connection)
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- [Advanced Configuration](#advanced-configuration)
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- [Troubleshooting](#troubleshooting)
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- [Cost Considerations](#cost-considerations)
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## Overview
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AWS Client VPN is a managed client-based VPN service that enables you to securely access your AWS resources from any location using an OpenVPN-based VPN client.
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### Key Features
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- **Certificate-based Authentication**: Secure authentication using X.509 certificates
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- **Split Tunneling**: Only route VPC traffic through VPN (internet traffic goes direct)
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- **Session Logging**: CloudWatch logs for all VPN connections
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- **Multi-platform Support**: Works on Windows, macOS, Linux, iOS, and Android
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- **High Availability**: AWS managed service with automatic failover
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## Why Use VPN
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### Security Benefits
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1. **Network-Level Access Control**: VPN required before accessing code-server
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2. **Hide Internal Infrastructure**: ALB and resources stay completely private
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3. **Additional Authentication Layer**: Certificates + OAuth2/SAML = multi-factor
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4. **Audit Trail**: All VPN connections logged in CloudWatch
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5. **IP Whitelisting Alternative**: No need to manage IP allowlists
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### Use Cases
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- **Fully Private Deployment**: No public endpoints at all
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- **Compliance Requirements**: Meet regulatory requirements for private access
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- **Remote Team Access**: Secure access for distributed teams
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- **Development Environments**: Keep dev/staging completely isolated
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## Architecture
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### With VPN Enabled
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```
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User Device
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↓
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AWS Client VPN Endpoint (Certificate Auth)
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↓
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Private Subnets
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↓
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Internal ALB → OAuth2 Proxy → Code-Server
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↓
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Private EC2/EKS Resources
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```
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### VPN Network Flow
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1. User connects to VPN with client certificate
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2. VPN assigns IP from client CIDR (172.16.0.0/22 by default)
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3. VPN routes VPC traffic (10.0.0.0/16) through tunnel
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4. User accesses internal ALB at private IP
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5. OAuth2 Proxy provides SAML/OIDC authentication
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6. Code-Server accessible only via VPN
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## Prerequisites
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- OpenSSL installed (for certificate generation)
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- AWS CLI configured with appropriate permissions
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- Terraform >= 1.0
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- IAM permissions to:
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- Create VPN endpoints
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- Import certificates to ACM
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- Create CloudWatch log groups
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- Modify security groups
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## Setup Steps
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### 1. Generate VPN Certificates
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VPN requires server and client certificates for authentication.
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```bash
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cd terraform/scripts
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# Generate certificates (will upload to ACM automatically)
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./generate-vpn-certificates.sh [cert-dir] [region] [common-name]
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# Example:
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./generate-vpn-certificates.sh ./vpn-certs us-east-1 code-server-vpn
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```
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This script:
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1. Creates a Certificate Authority (CA)
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2. Generates server certificate
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3. Generates client certificate
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4. Uploads both to AWS Certificate Manager
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5. Outputs certificate ARNs for Terraform
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**Output Files:**
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- `ca.key` - CA private key (keep secure!)
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- `ca.crt` - CA certificate
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- `server.key` - Server private key (keep secure!)
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- `server.crt` - Server certificate
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- `client.key` - Client private key (distribute to users)
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- `client.crt` - Client certificate (distribute to users)
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- `certificate-arns.txt` - ARNs for Terraform
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- `terraform-vars.txt` - Terraform configuration snippet
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**Security Note:**
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- Store `ca.key` and `server.key` securely (never share these!)
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- Back up all certificates securely
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- Distribute `client.key` and `client.crt` to authorized users only
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### 2. Configure Terraform
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Edit your `terraform.tfvars` file:
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```hcl
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# EC2 or EKS deployment
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# Enable VPN
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enable_vpn = true
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# Certificate ARNs from step 1
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vpn_server_certificate_arn = "arn:aws:acm:us-east-1:123456789012:certificate/xxxxx"
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vpn_client_certificate_arn = "arn:aws:acm:us-east-1:123456789012:certificate/yyyyy"
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# VPN Configuration
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vpn_client_cidr_block = "172.16.0.0/22" # Must not overlap with VPC CIDR
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vpn_split_tunnel = true # Recommended
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vpn_transport_protocol = "udp" # udp (faster) or tcp
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vpn_port = 443 # 443 or 1194
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vpn_session_timeout_hours = 24 # 8-24 hours
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vpn_client_login_banner = "Welcome to Code-Server VPN. Authorized access only."
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# Make ALB internal (required for VPN-only access)
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internal_alb = true
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```
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### 3. Deploy VPN
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Deploy the infrastructure with VPN enabled:
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```bash
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# EC2 Deployment
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cd deployments/ec2
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terraform apply
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# EKS Deployment
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cd deployments/eks
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terraform apply
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```
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Terraform will create:
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- Client VPN Endpoint
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- VPN Network Associations (in private subnets)
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- Authorization Rules (allow access to VPC CIDR)
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- Security Group for VPN
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- CloudWatch Log Group for VPN connections
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**Deployment Time:** ~5-10 minutes for VPN endpoint to become available
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### 4. Export Client Configuration
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After deployment completes, export the VPN client configuration:
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```bash
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cd terraform/scripts
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# Auto-detect VPN endpoint from Terraform state
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./export-vpn-config.sh
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# Or specify manually
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./export-vpn-config.sh <vpn-endpoint-id> [region] [output-dir] [cert-dir]
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# Example:
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./export-vpn-config.sh cvpn-endpoint-0123456789abcdef0 us-east-1 ./vpn-config ./vpn-certs
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```
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This script:
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1. Downloads VPN configuration from AWS
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2. Embeds client certificate and key
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3. Creates platform-ready `.ovpn` file
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**Output:** `code-server-vpn.ovpn` - ready to distribute to users
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### 5. Distribute to Users
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**Securely** distribute these files to authorized users:
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- `code-server-vpn.ovpn` - VPN configuration file
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**Distribution Methods:**
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- Encrypted email
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- Secure file sharing (e.g., 1Password, encrypted USB)
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- MDM system for corporate devices
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- Secure internal portal
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## Client Setup
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### macOS
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1. **Install Tunnelblick** (free, open-source)
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```bash
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brew install --cask tunnelblick
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# Or download from https://tunnelblick.net/
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```
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2. **Import Configuration**
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- Double-click `code-server-vpn.ovpn`
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- Tunnelblick will import it automatically
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3. **Connect**
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- Click Tunnelblick icon in menu bar
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- Select "Connect code-server-vpn"
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- VPN should connect within a few seconds
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### Windows
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1. **Install OpenVPN Connect**
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- Download from https://openvpn.net/client-connect-vpn-for-windows/
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- Install and launch
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2. **Import Configuration**
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- File → Import Profile
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- Select `code-server-vpn.ovpn`
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3. **Connect**
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- Click "Connect" on the profile
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- Wait for connection to establish
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### Linux
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1. **Install OpenVPN**
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```bash
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# Debian/Ubuntu
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sudo apt-get update
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sudo apt-get install openvpn
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# RHEL/CentOS
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sudo yum install openvpn
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# Arch
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sudo pacman -S openvpn
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```
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2. **Connect**
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```bash
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sudo openvpn --config code-server-vpn.ovpn
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```
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3. **Run as Service** (optional)
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```bash
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sudo cp code-server-vpn.ovpn /etc/openvpn/client/code-server.conf
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sudo systemctl start openvpn-client@code-server
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sudo systemctl enable openvpn-client@code-server
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```
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### iOS
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1. **Install OpenVPN Connect**
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- Download from App Store
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2. **Transfer Configuration**
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- Email to yourself, or
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- Use AirDrop, or
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- Upload to iCloud/Dropbox
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3. **Import and Connect**
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- Open `.ovpn` file
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- Import to OpenVPN Connect
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- Tap "Connect"
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### Android
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1. **Install OpenVPN for Android**
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- Download from Google Play Store
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2. **Transfer Configuration**
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- Email to yourself, or
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- Upload to Google Drive/Dropbox
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3. **Import and Connect**
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- Open `.ovpn` file
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- Import to OpenVPN
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- Tap "Connect"
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## Testing VPN Connection
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### 1. Connect to VPN
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Connect using your platform's VPN client (see Client Setup above).
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### 2. Verify VPN Connection
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**macOS/Linux:**
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```bash
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# Check VPN interface
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ifconfig | grep tun
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# Check VPN IP assignment
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ifconfig tun0 # or tun1, etc.
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# Should show IP in 172.16.0.0/22 range
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```
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**Windows:**
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```powershell
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# Check VPN adapter
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ipconfig | findstr "172.16"
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```
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### 3. Test Access to Code-Server
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Get the internal ALB DNS name:
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```bash
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# From Terraform output
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terraform output alb_dns_name # EC2
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# Or
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kubectl get ingress -n code-server # EKS
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```
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Access code-server:
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```bash
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# EC2
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curl -I http://<alb-dns-name>
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# EKS
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curl -I http://<alb-dns-name>
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```
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**Expected Result:** You should get a redirect to OAuth2 login or code-server login page.
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### 4. Check CloudWatch Logs
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View VPN connection logs:
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```bash
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aws logs tail /aws/vpn/<prefix> --follow
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```
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You should see connection events with your IP address.
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## Advanced Configuration
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### Multiple Client Certificates
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To create additional client certificates for different users:
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```bash
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# Generate new client cert
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openssl genrsa -out client2.key 2048
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openssl req -new -key client2.key -out client2.csr
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openssl x509 -req -days 3650 -in client2.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out client2.crt
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# Create user-specific .ovpn file
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./export-vpn-config.sh <vpn-endpoint-id> us-east-1 ./user2-config ./
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# Manually replace client cert/key in the .ovpn file
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```
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### SAML/SSO Authentication
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For enterprise deployments, use SAML-based authentication instead of certificates:
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```hcl
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# terraform.tfvars
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vpn_authentication_type = "federated-authentication"
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enable_saml_authentication = true
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saml_provider_arn = "arn:aws:iam::123456789012:saml-provider/YourSAMLProvider"
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```
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This combines VPN (network access) with SAML (user authentication).
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### Split Tunnel Configuration
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**Enabled (default - recommended):**
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```hcl
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vpn_split_tunnel = true
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```
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- Only VPC traffic (10.0.0.0/16) routed through VPN
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||||||
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- Internet traffic goes directly
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||||||
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- Better performance for users
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||||||
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|
||||||
|
**Disabled (full tunnel):**
|
||||||
|
```hcl
|
||||||
|
vpn_split_tunnel = false
|
||||||
|
```
|
||||||
|
- All traffic routed through VPN
|
||||||
|
- More secure but slower
|
||||||
|
- Required for some compliance scenarios
|
||||||
|
|
||||||
|
### Custom DNS Servers
|
||||||
|
|
||||||
|
Route DNS queries through VPN:
|
||||||
|
|
||||||
|
```hcl
|
||||||
|
vpn_dns_servers = ["10.0.0.2"] # VPC DNS resolver
|
||||||
|
```
|
||||||
|
|
||||||
|
### Session Timeout
|
||||||
|
|
||||||
|
Configure VPN session duration:
|
||||||
|
|
||||||
|
```hcl
|
||||||
|
vpn_session_timeout_hours = 12 # 8-24 hours
|
||||||
|
```
|
||||||
|
|
||||||
|
Users will be disconnected after this period and must reconnect.
|
||||||
|
|
||||||
|
## Troubleshooting
|
||||||
|
|
||||||
|
### Connection Fails
|
||||||
|
|
||||||
|
**Check Certificate Validity:**
|
||||||
|
```bash
|
||||||
|
openssl x509 -in client.crt -text -noout
|
||||||
|
# Verify "Not After" date
|
||||||
|
```
|
||||||
|
|
||||||
|
**Check VPN Endpoint Status:**
|
||||||
|
```bash
|
||||||
|
aws ec2 describe-client-vpn-endpoints \
|
||||||
|
--client-vpn-endpoint-ids <endpoint-id>
|
||||||
|
```
|
||||||
|
|
||||||
|
**Check CloudWatch Logs:**
|
||||||
|
```bash
|
||||||
|
aws logs tail /aws/vpn/<prefix> --follow
|
||||||
|
```
|
||||||
|
|
||||||
|
### Cannot Access Code-Server After Connecting
|
||||||
|
|
||||||
|
**1. Verify VPN IP Assignment:**
|
||||||
|
```bash
|
||||||
|
ifconfig | grep 172.16 # macOS/Linux
|
||||||
|
ipconfig | findstr "172.16" # Windows
|
||||||
|
```
|
||||||
|
|
||||||
|
**2. Check Authorization Rules:**
|
||||||
|
```bash
|
||||||
|
aws ec2 describe-client-vpn-authorization-rules \
|
||||||
|
--client-vpn-endpoint-id <endpoint-id>
|
||||||
|
```
|
||||||
|
|
||||||
|
**3. Check Security Groups:**
|
||||||
|
```bash
|
||||||
|
# Verify VPN security group allows traffic to ALB
|
||||||
|
aws ec2 describe-security-groups --group-ids <sg-id>
|
||||||
|
```
|
||||||
|
|
||||||
|
**4. Test DNS Resolution:**
|
||||||
|
```bash
|
||||||
|
nslookup <alb-dns-name>
|
||||||
|
dig <alb-dns-name>
|
||||||
|
```
|
||||||
|
|
||||||
|
### Split Tunnel Not Working
|
||||||
|
|
||||||
|
Check routing table after VPN connection:
|
||||||
|
|
||||||
|
**macOS/Linux:**
|
||||||
|
```bash
|
||||||
|
netstat -rn | grep tun
|
||||||
|
# Should only see VPC CIDR (10.0.0.0/16) routes
|
||||||
|
```
|
||||||
|
|
||||||
|
**Windows:**
|
||||||
|
```powershell
|
||||||
|
route print | findstr "172.16"
|
||||||
|
```
|
||||||
|
|
||||||
|
### Certificate Expired
|
||||||
|
|
||||||
|
Certificates are valid for 10 years by default. To renew:
|
||||||
|
|
||||||
|
1. Generate new certificates (see Step 1)
|
||||||
|
2. Update certificate ARNs in Terraform
|
||||||
|
3. Run `terraform apply`
|
||||||
|
4. Export new client configuration
|
||||||
|
5. Distribute to users
|
||||||
|
|
||||||
|
## Cost Considerations
|
||||||
|
|
||||||
|
### AWS Client VPN Pricing (as of 2024)
|
||||||
|
|
||||||
|
**Endpoint Association:**
|
||||||
|
- $0.10 per hour per subnet association
|
||||||
|
- For 3 subnets (multi-AZ): ~$216/month
|
||||||
|
|
||||||
|
**Connection Time:**
|
||||||
|
- $0.05 per hour per connection
|
||||||
|
- For 10 active users (8 hrs/day): ~$88/month
|
||||||
|
|
||||||
|
**Total Estimated Cost:**
|
||||||
|
- Base: ~$216/month (always running)
|
||||||
|
- Variable: ~$0.40 per user per day
|
||||||
|
|
||||||
|
**Cost Optimization:**
|
||||||
|
|
||||||
|
1. **Single Subnet Association** (not recommended for production):
|
||||||
|
```hcl
|
||||||
|
subnet_ids = [module.vpc.private_subnet_ids[0]] # Only one AZ
|
||||||
|
```
|
||||||
|
Saves: ~$140/month (but loses HA)
|
||||||
|
|
||||||
|
2. **Scheduled VPN** (for dev environments):
|
||||||
|
- Use Lambda to disable VPN outside business hours
|
||||||
|
- Potential savings: ~50-70%
|
||||||
|
|
||||||
|
3. **Alternative: Direct Connect or Site-to-Site VPN:**
|
||||||
|
- For office connectivity: Site-to-Site VPN ($0.05/hr = ~$36/month)
|
||||||
|
- For large teams: Direct Connect (higher setup, lower per-GB cost)
|
||||||
|
|
||||||
|
## Security Best Practices
|
||||||
|
|
||||||
|
1. **Certificate Management:**
|
||||||
|
- Store CA private key in HSM or secure vault
|
||||||
|
- Rotate certificates annually
|
||||||
|
- Revoke certificates for departed users
|
||||||
|
|
||||||
|
2. **Monitoring:**
|
||||||
|
- Set up CloudWatch Alarms for unusual connection patterns
|
||||||
|
- Review VPN logs regularly
|
||||||
|
- Alert on failed authentication attempts
|
||||||
|
|
||||||
|
3. **Network Segmentation:**
|
||||||
|
- Use separate subnets for VPN clients if needed
|
||||||
|
- Apply additional security groups for VPN traffic
|
||||||
|
- Implement network ACLs for defense in depth
|
||||||
|
|
||||||
|
4. **Multi-Factor Authentication:**
|
||||||
|
- Combine VPN (certificate) + OAuth2/SAML for true MFA
|
||||||
|
- Optionally add SAML to VPN itself for triple-factor
|
||||||
|
|
||||||
|
5. **Access Control:**
|
||||||
|
- Use separate client certificates per user for audit trail
|
||||||
|
- Implement IP-based restrictions if needed
|
||||||
|
- Regular access reviews
|
||||||
|
|
||||||
|
## Additional Resources
|
||||||
|
|
||||||
|
- [AWS Client VPN Documentation](https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/what-is.html)
|
||||||
|
- [AWS Client VPN Pricing](https://aws.amazon.com/vpn/pricing/)
|
||||||
|
- [OpenVPN Documentation](https://openvpn.net/community-resources/)
|
||||||
|
- [Tunnelblick Documentation](https://tunnelblick.net/documents.html)
|
||||||
|
|
||||||
|
## Support
|
||||||
|
|
||||||
|
For issues or questions:
|
||||||
|
- Check [Troubleshooting](#troubleshooting) section
|
||||||
|
- Review CloudWatch Logs
|
||||||
|
- Check AWS VPN endpoint status
|
||||||
|
- Consult main [README.md](README.md)
|
||||||
|
|
@ -115,3 +115,26 @@ module "code_server_ec2" {
|
||||||
|
|
||||||
tags = local.common_tags
|
tags = local.common_tags
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# VPN Module (Optional)
|
||||||
|
module "vpn" {
|
||||||
|
count = var.enable_vpn ? 1 : 0
|
||||||
|
source = "../../modules/vpn"
|
||||||
|
|
||||||
|
name_prefix = local.name_prefix
|
||||||
|
vpc_id = module.vpc.vpc_id
|
||||||
|
vpc_cidr = module.vpc.vpc_cidr
|
||||||
|
subnet_ids = module.vpc.private_subnet_ids
|
||||||
|
server_certificate_arn = var.vpn_server_certificate_arn
|
||||||
|
client_certificate_arn = var.vpn_client_certificate_arn
|
||||||
|
client_cidr_block = var.vpn_client_cidr_block
|
||||||
|
split_tunnel = var.vpn_split_tunnel
|
||||||
|
authentication_type = var.vpn_authentication_type
|
||||||
|
dns_servers = var.vpn_dns_servers
|
||||||
|
transport_protocol = var.vpn_transport_protocol
|
||||||
|
vpn_port = var.vpn_port
|
||||||
|
session_timeout_hours = var.vpn_session_timeout_hours
|
||||||
|
client_login_banner = var.vpn_client_login_banner
|
||||||
|
|
||||||
|
tags = local.common_tags
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -40,6 +40,21 @@ output "kms_key_arn" {
|
||||||
value = module.security.kms_key_arn
|
value = module.security.kms_key_arn
|
||||||
}
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_id" {
|
||||||
|
description = "ID of the VPN endpoint (if enabled)"
|
||||||
|
value = var.enable_vpn ? module.vpn[0].vpn_endpoint_id : null
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_dns_name" {
|
||||||
|
description = "DNS name of the VPN endpoint (if enabled)"
|
||||||
|
value = var.enable_vpn ? module.vpn[0].vpn_endpoint_dns_name : null
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_client_cidr_block" {
|
||||||
|
description = "CIDR block for VPN clients (if enabled)"
|
||||||
|
value = var.enable_vpn ? var.vpn_client_cidr_block : null
|
||||||
|
}
|
||||||
|
|
||||||
output "next_steps" {
|
output "next_steps" {
|
||||||
description = "Next steps to complete the setup"
|
description = "Next steps to complete the setup"
|
||||||
value = <<-EOT
|
value = <<-EOT
|
||||||
|
|
@ -73,5 +88,6 @@ output "next_steps" {
|
||||||
- ALB is ${var.internal_alb ? "internal (private network only)" : "public"}
|
- ALB is ${var.internal_alb ? "internal (private network only)" : "public"}
|
||||||
- Data is encrypted at rest using KMS
|
- Data is encrypted at rest using KMS
|
||||||
- VPC Flow Logs are enabled for monitoring
|
- VPC Flow Logs are enabled for monitoring
|
||||||
|
${var.enable_vpn ? "\n VPN Configuration:\n - VPN Endpoint: ${module.vpn[0].vpn_endpoint_dns_name}\n - To export VPN configuration: ../../scripts/export-vpn-config.sh ${module.vpn[0].vpn_endpoint_id} ${var.aws_region}\n - VPN clients will receive IPs from: ${var.vpn_client_cidr_block}" : ""}
|
||||||
EOT
|
EOT
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -45,3 +45,16 @@ oauth2_allowed_emails = [
|
||||||
# "user1@example.com",
|
# "user1@example.com",
|
||||||
# "user2@example.com"
|
# "user2@example.com"
|
||||||
]
|
]
|
||||||
|
|
||||||
|
# VPN Configuration (Optional - for enhanced security)
|
||||||
|
# First run: ../../scripts/generate-vpn-certificates.sh
|
||||||
|
enable_vpn = false # Set to true to enable VPN
|
||||||
|
vpn_server_certificate_arn = "" # ARN from generate-vpn-certificates.sh
|
||||||
|
vpn_client_certificate_arn = "" # ARN from generate-vpn-certificates.sh
|
||||||
|
vpn_client_cidr_block = "172.16.0.0/22" # Must not overlap with VPC
|
||||||
|
vpn_split_tunnel = true # Only route VPC traffic through VPN
|
||||||
|
vpn_authentication_type = "certificate-authentication"
|
||||||
|
vpn_transport_protocol = "udp" # udp (faster) or tcp (more reliable)
|
||||||
|
vpn_port = 443 # 443 or 1194
|
||||||
|
vpn_session_timeout_hours = 24 # 8-24 hours
|
||||||
|
vpn_client_login_banner = "Welcome to Code-Server VPN. Authorized access only."
|
||||||
|
|
|
||||||
|
|
@ -145,3 +145,70 @@ variable "oauth2_allowed_emails" {
|
||||||
type = list(string)
|
type = list(string)
|
||||||
default = []
|
default = []
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# VPN Configuration
|
||||||
|
variable "enable_vpn" {
|
||||||
|
description = "Enable AWS Client VPN for secure access"
|
||||||
|
type = bool
|
||||||
|
default = false
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_server_certificate_arn" {
|
||||||
|
description = "ARN of server certificate in ACM for VPN"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_certificate_arn" {
|
||||||
|
description = "ARN of client root certificate in ACM for VPN"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_cidr_block" {
|
||||||
|
description = "CIDR block for VPN clients (must not overlap with VPC)"
|
||||||
|
type = string
|
||||||
|
default = "172.16.0.0/22"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_split_tunnel" {
|
||||||
|
description = "Enable split tunnel (only route VPC traffic through VPN)"
|
||||||
|
type = bool
|
||||||
|
default = true
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_authentication_type" {
|
||||||
|
description = "VPN authentication type (certificate-authentication recommended)"
|
||||||
|
type = string
|
||||||
|
default = "certificate-authentication"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_dns_servers" {
|
||||||
|
description = "DNS servers for VPN clients (leave empty to use VPC DNS)"
|
||||||
|
type = list(string)
|
||||||
|
default = []
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_transport_protocol" {
|
||||||
|
description = "VPN transport protocol (udp recommended for better performance)"
|
||||||
|
type = string
|
||||||
|
default = "udp"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_port" {
|
||||||
|
description = "VPN port (443 or 1194)"
|
||||||
|
type = number
|
||||||
|
default = 443
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_session_timeout_hours" {
|
||||||
|
description = "VPN session timeout in hours (8-24)"
|
||||||
|
type = number
|
||||||
|
default = 24
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_login_banner" {
|
||||||
|
description = "Banner text to display on VPN client login"
|
||||||
|
type = string
|
||||||
|
default = "Welcome to Code-Server VPN. Authorized access only."
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -243,3 +243,26 @@ resource "kubernetes_storage_class" "gp3" {
|
||||||
|
|
||||||
depends_on = [module.eks]
|
depends_on = [module.eks]
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# VPN Module (Optional)
|
||||||
|
module "vpn" {
|
||||||
|
count = var.enable_vpn ? 1 : 0
|
||||||
|
source = "../../modules/vpn"
|
||||||
|
|
||||||
|
name_prefix = local.name_prefix
|
||||||
|
vpc_id = module.vpc.vpc_id
|
||||||
|
vpc_cidr = module.vpc.vpc_cidr
|
||||||
|
subnet_ids = module.vpc.private_subnet_ids
|
||||||
|
server_certificate_arn = var.vpn_server_certificate_arn
|
||||||
|
client_certificate_arn = var.vpn_client_certificate_arn
|
||||||
|
client_cidr_block = var.vpn_client_cidr_block
|
||||||
|
split_tunnel = var.vpn_split_tunnel
|
||||||
|
authentication_type = var.vpn_authentication_type
|
||||||
|
dns_servers = var.vpn_dns_servers
|
||||||
|
transport_protocol = var.vpn_transport_protocol
|
||||||
|
vpn_port = var.vpn_port
|
||||||
|
session_timeout_hours = var.vpn_session_timeout_hours
|
||||||
|
client_login_banner = var.vpn_client_login_banner
|
||||||
|
|
||||||
|
tags = local.common_tags
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -40,6 +40,21 @@ output "kms_key_arn" {
|
||||||
value = module.security.kms_key_arn
|
value = module.security.kms_key_arn
|
||||||
}
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_id" {
|
||||||
|
description = "ID of the VPN endpoint (if enabled)"
|
||||||
|
value = var.enable_vpn ? module.vpn[0].vpn_endpoint_id : null
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_dns_name" {
|
||||||
|
description = "DNS name of the VPN endpoint (if enabled)"
|
||||||
|
value = var.enable_vpn ? module.vpn[0].vpn_endpoint_dns_name : null
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_client_cidr_block" {
|
||||||
|
description = "CIDR block for VPN clients (if enabled)"
|
||||||
|
value = var.enable_vpn ? var.vpn_client_cidr_block : null
|
||||||
|
}
|
||||||
|
|
||||||
output "configure_kubectl" {
|
output "configure_kubectl" {
|
||||||
description = "Command to configure kubectl"
|
description = "Command to configure kubectl"
|
||||||
value = "aws eks update-kubeconfig --region ${var.aws_region} --name ${module.eks.cluster_id}"
|
value = "aws eks update-kubeconfig --region ${var.aws_region} --name ${module.eks.cluster_id}"
|
||||||
|
|
@ -101,6 +116,7 @@ output "next_steps" {
|
||||||
- Data is encrypted at rest using KMS
|
- Data is encrypted at rest using KMS
|
||||||
- VPC Flow Logs are enabled for monitoring
|
- VPC Flow Logs are enabled for monitoring
|
||||||
- IRSA (IAM Roles for Service Accounts) is enabled
|
- IRSA (IAM Roles for Service Accounts) is enabled
|
||||||
|
${var.enable_vpn ? "\n VPN Configuration:\n - VPN Endpoint: ${module.vpn[0].vpn_endpoint_dns_name}\n - To export VPN configuration: ../../scripts/export-vpn-config.sh ${module.vpn[0].vpn_endpoint_id} ${var.aws_region}\n - VPN clients will receive IPs from: ${var.vpn_client_cidr_block}" : ""}
|
||||||
|
|
||||||
Useful Commands:
|
Useful Commands:
|
||||||
- Scale nodes: kubectl scale deployment code-server -n code-server --replicas=3
|
- Scale nodes: kubectl scale deployment code-server -n code-server --replicas=3
|
||||||
|
|
|
||||||
|
|
@ -36,3 +36,16 @@ oauth2_client_secret = "your-client-secret-from-idp"
|
||||||
# Generate cookie secret with:
|
# Generate cookie secret with:
|
||||||
# python -c 'import os,base64; print(base64.urlsafe_b64encode(os.urandom(32)).decode())'
|
# python -c 'import os,base64; print(base64.urlsafe_b64encode(os.urandom(32)).decode())'
|
||||||
oauth2_cookie_secret = "generate-random-secret-here"
|
oauth2_cookie_secret = "generate-random-secret-here"
|
||||||
|
|
||||||
|
# VPN Configuration (Optional - for enhanced security)
|
||||||
|
# First run: ../../scripts/generate-vpn-certificates.sh
|
||||||
|
enable_vpn = false # Set to true to enable VPN
|
||||||
|
vpn_server_certificate_arn = "" # ARN from generate-vpn-certificates.sh
|
||||||
|
vpn_client_certificate_arn = "" # ARN from generate-vpn-certificates.sh
|
||||||
|
vpn_client_cidr_block = "172.16.0.0/22" # Must not overlap with VPC
|
||||||
|
vpn_split_tunnel = true # Only route VPC traffic through VPN
|
||||||
|
vpn_authentication_type = "certificate-authentication"
|
||||||
|
vpn_transport_protocol = "udp" # udp (faster) or tcp (more reliable)
|
||||||
|
vpn_port = 443 # 443 or 1194
|
||||||
|
vpn_session_timeout_hours = 24 # 8-24 hours
|
||||||
|
vpn_client_login_banner = "Welcome to Code-Server VPN. Authorized access only."
|
||||||
|
|
|
||||||
|
|
@ -137,3 +137,70 @@ variable "oauth2_cookie_secret" {
|
||||||
sensitive = true
|
sensitive = true
|
||||||
default = ""
|
default = ""
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# VPN Configuration
|
||||||
|
variable "enable_vpn" {
|
||||||
|
description = "Enable AWS Client VPN for secure access"
|
||||||
|
type = bool
|
||||||
|
default = false
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_server_certificate_arn" {
|
||||||
|
description = "ARN of server certificate in ACM for VPN"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_certificate_arn" {
|
||||||
|
description = "ARN of client root certificate in ACM for VPN"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_cidr_block" {
|
||||||
|
description = "CIDR block for VPN clients (must not overlap with VPC)"
|
||||||
|
type = string
|
||||||
|
default = "172.16.0.0/22"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_split_tunnel" {
|
||||||
|
description = "Enable split tunnel (only route VPC traffic through VPN)"
|
||||||
|
type = bool
|
||||||
|
default = true
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_authentication_type" {
|
||||||
|
description = "VPN authentication type (certificate-authentication recommended)"
|
||||||
|
type = string
|
||||||
|
default = "certificate-authentication"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_dns_servers" {
|
||||||
|
description = "DNS servers for VPN clients (leave empty to use VPC DNS)"
|
||||||
|
type = list(string)
|
||||||
|
default = []
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_transport_protocol" {
|
||||||
|
description = "VPN transport protocol (udp recommended for better performance)"
|
||||||
|
type = string
|
||||||
|
default = "udp"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_port" {
|
||||||
|
description = "VPN port (443 or 1194)"
|
||||||
|
type = number
|
||||||
|
default = 443
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_session_timeout_hours" {
|
||||||
|
description = "VPN session timeout in hours (8-24)"
|
||||||
|
type = number
|
||||||
|
default = 24
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_client_login_banner" {
|
||||||
|
description = "Banner text to display on VPN client login"
|
||||||
|
type = string
|
||||||
|
default = "Welcome to Code-Server VPN. Authorized access only."
|
||||||
|
}
|
||||||
|
|
|
||||||
182
terraform/modules/vpn/main.tf
Normal file
182
terraform/modules/vpn/main.tf
Normal file
|
|
@ -0,0 +1,182 @@
|
||||||
|
# VPN Module for Code-Server
|
||||||
|
# Creates AWS Client VPN endpoint for secure access to private resources
|
||||||
|
|
||||||
|
# CloudWatch Log Group for VPN connection logs
|
||||||
|
resource "aws_cloudwatch_log_group" "vpn" {
|
||||||
|
name = "/aws/vpn/${var.name_prefix}"
|
||||||
|
retention_in_days = var.log_retention_days
|
||||||
|
|
||||||
|
tags = var.tags
|
||||||
|
}
|
||||||
|
|
||||||
|
resource "aws_cloudwatch_log_stream" "vpn" {
|
||||||
|
name = "vpn-connection-logs"
|
||||||
|
log_group_name = aws_cloudwatch_log_group.vpn.name
|
||||||
|
}
|
||||||
|
|
||||||
|
# Client VPN Endpoint
|
||||||
|
resource "aws_ec2_client_vpn_endpoint" "main" {
|
||||||
|
description = "Client VPN endpoint for ${var.name_prefix}"
|
||||||
|
server_certificate_arn = var.server_certificate_arn
|
||||||
|
client_cidr_block = var.client_cidr_block
|
||||||
|
split_tunnel = var.split_tunnel
|
||||||
|
vpc_id = var.vpc_id
|
||||||
|
|
||||||
|
# Authentication using certificate-based or Active Directory
|
||||||
|
authentication_options {
|
||||||
|
type = var.authentication_type
|
||||||
|
root_certificate_chain_arn = var.authentication_type == "certificate-authentication" ? var.client_certificate_arn : null
|
||||||
|
|
||||||
|
# For Active Directory authentication
|
||||||
|
active_directory_id = var.authentication_type == "directory-service-authentication" ? var.active_directory_id : null
|
||||||
|
}
|
||||||
|
|
||||||
|
# Additional authentication option for MFA (optional)
|
||||||
|
dynamic "authentication_options" {
|
||||||
|
for_each = var.enable_saml_authentication ? [1] : []
|
||||||
|
content {
|
||||||
|
type = "federated-authentication"
|
||||||
|
saml_provider_arn = var.saml_provider_arn
|
||||||
|
self_service_saml_provider_arn = var.self_service_saml_provider_arn
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
# Connection logging
|
||||||
|
connection_log_options {
|
||||||
|
enabled = true
|
||||||
|
cloudwatch_log_group = aws_cloudwatch_log_group.vpn.name
|
||||||
|
cloudwatch_log_stream = aws_cloudwatch_log_stream.vpn.name
|
||||||
|
}
|
||||||
|
|
||||||
|
# DNS servers to use
|
||||||
|
dns_servers = var.dns_servers
|
||||||
|
|
||||||
|
# Transport protocol
|
||||||
|
transport_protocol = var.transport_protocol
|
||||||
|
|
||||||
|
# VPN port
|
||||||
|
vpn_port = var.vpn_port
|
||||||
|
|
||||||
|
# Session timeout
|
||||||
|
session_timeout_hours = var.session_timeout_hours
|
||||||
|
|
||||||
|
# Client connect options (for custom authorization)
|
||||||
|
dynamic "client_connect_options" {
|
||||||
|
for_each = var.enable_client_connect_handler ? [1] : []
|
||||||
|
content {
|
||||||
|
enabled = true
|
||||||
|
lambda_function_arn = var.client_connect_lambda_arn
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
# Client login banner
|
||||||
|
dynamic "client_login_banner_options" {
|
||||||
|
for_each = var.client_login_banner != "" ? [1] : []
|
||||||
|
content {
|
||||||
|
enabled = true
|
||||||
|
banner_text = var.client_login_banner
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
tags = merge(
|
||||||
|
var.tags,
|
||||||
|
{
|
||||||
|
Name = "${var.name_prefix}-vpn-endpoint"
|
||||||
|
}
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
# Associate VPN endpoint with subnets
|
||||||
|
resource "aws_ec2_client_vpn_network_association" "main" {
|
||||||
|
count = length(var.subnet_ids)
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
subnet_id = var.subnet_ids[count.index]
|
||||||
|
|
||||||
|
lifecycle {
|
||||||
|
# The issue why we are ignoring changes is that on the first resource creation, its terraform-aws-client-vpn-endpoint
|
||||||
|
# This will change on AWS's next apply to the instance ID.
|
||||||
|
ignore_changes = [subnet_id]
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
# Authorization rule to allow access to VPC CIDR
|
||||||
|
resource "aws_ec2_client_vpn_authorization_rule" "vpc_access" {
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
target_network_cidr = var.vpc_cidr
|
||||||
|
authorize_all_groups = var.authorize_all_groups
|
||||||
|
access_group_id = var.authorize_all_groups ? null : var.access_group_id
|
||||||
|
description = "Allow access to VPC"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Additional authorization rules for specific CIDRs
|
||||||
|
resource "aws_ec2_client_vpn_authorization_rule" "additional" {
|
||||||
|
count = length(var.additional_authorization_rules)
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
target_network_cidr = var.additional_authorization_rules[count.index].cidr
|
||||||
|
authorize_all_groups = var.additional_authorization_rules[count.index].authorize_all_groups
|
||||||
|
access_group_id = var.additional_authorization_rules[count.index].access_group_id
|
||||||
|
description = var.additional_authorization_rules[count.index].description
|
||||||
|
}
|
||||||
|
|
||||||
|
# Route to direct traffic to the VPC
|
||||||
|
resource "aws_ec2_client_vpn_route" "vpc_route" {
|
||||||
|
count = var.split_tunnel ? 1 : 0
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
destination_cidr_block = var.vpc_cidr
|
||||||
|
target_vpc_subnet_id = aws_ec2_client_vpn_network_association.main[0].subnet_id
|
||||||
|
description = "Route to VPC"
|
||||||
|
|
||||||
|
depends_on = [aws_ec2_client_vpn_network_association.main]
|
||||||
|
}
|
||||||
|
|
||||||
|
# Additional routes for specific networks
|
||||||
|
resource "aws_ec2_client_vpn_route" "additional" {
|
||||||
|
count = length(var.additional_routes)
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
destination_cidr_block = var.additional_routes[count.index].cidr
|
||||||
|
target_vpc_subnet_id = aws_ec2_client_vpn_network_association.main[0].subnet_id
|
||||||
|
description = var.additional_routes[count.index].description
|
||||||
|
|
||||||
|
depends_on = [aws_ec2_client_vpn_network_association.main]
|
||||||
|
}
|
||||||
|
|
||||||
|
# Security group for VPN endpoint
|
||||||
|
resource "aws_security_group" "vpn" {
|
||||||
|
name_prefix = "${var.name_prefix}-vpn-"
|
||||||
|
description = "Security group for Client VPN endpoint"
|
||||||
|
vpc_id = var.vpc_id
|
||||||
|
|
||||||
|
ingress {
|
||||||
|
description = "VPN traffic"
|
||||||
|
from_port = var.vpn_port
|
||||||
|
to_port = var.vpn_port
|
||||||
|
protocol = var.transport_protocol == "tcp" ? "tcp" : "udp"
|
||||||
|
cidr_blocks = var.vpn_ingress_cidr_blocks
|
||||||
|
}
|
||||||
|
|
||||||
|
egress {
|
||||||
|
description = "Allow all outbound"
|
||||||
|
from_port = 0
|
||||||
|
to_port = 0
|
||||||
|
protocol = "-1"
|
||||||
|
cidr_blocks = ["0.0.0.0/0"]
|
||||||
|
}
|
||||||
|
|
||||||
|
tags = merge(
|
||||||
|
var.tags,
|
||||||
|
{
|
||||||
|
Name = "${var.name_prefix}-vpn-sg"
|
||||||
|
}
|
||||||
|
)
|
||||||
|
|
||||||
|
lifecycle {
|
||||||
|
create_before_destroy = true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
# Apply security group to VPN endpoint
|
||||||
|
resource "aws_ec2_client_vpn_endpoint_security_group_association" "main" {
|
||||||
|
count = var.apply_security_group ? 1 : 0
|
||||||
|
client_vpn_endpoint_id = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
security_group_id = aws_security_group.vpn.id
|
||||||
|
}
|
||||||
36
terraform/modules/vpn/outputs.tf
Normal file
36
terraform/modules/vpn/outputs.tf
Normal file
|
|
@ -0,0 +1,36 @@
|
||||||
|
# VPN Module Outputs
|
||||||
|
|
||||||
|
output "vpn_endpoint_id" {
|
||||||
|
description = "ID of the Client VPN endpoint"
|
||||||
|
value = aws_ec2_client_vpn_endpoint.main.id
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_arn" {
|
||||||
|
description = "ARN of the Client VPN endpoint"
|
||||||
|
value = aws_ec2_client_vpn_endpoint.main.arn
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_dns_name" {
|
||||||
|
description = "DNS name of the Client VPN endpoint"
|
||||||
|
value = aws_ec2_client_vpn_endpoint.main.dns_name
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_security_group_id" {
|
||||||
|
description = "ID of the VPN security group"
|
||||||
|
value = aws_security_group.vpn.id
|
||||||
|
}
|
||||||
|
|
||||||
|
output "client_cidr_block" {
|
||||||
|
description = "CIDR block assigned to VPN clients"
|
||||||
|
value = var.client_cidr_block
|
||||||
|
}
|
||||||
|
|
||||||
|
output "vpn_endpoint_status" {
|
||||||
|
description = "Status of the Client VPN endpoint"
|
||||||
|
value = aws_ec2_client_vpn_endpoint.main.status
|
||||||
|
}
|
||||||
|
|
||||||
|
output "cloudwatch_log_group" {
|
||||||
|
description = "CloudWatch Log Group for VPN connections"
|
||||||
|
value = aws_cloudwatch_log_group.vpn.name
|
||||||
|
}
|
||||||
192
terraform/modules/vpn/variables.tf
Normal file
192
terraform/modules/vpn/variables.tf
Normal file
|
|
@ -0,0 +1,192 @@
|
||||||
|
# VPN Module Variables
|
||||||
|
|
||||||
|
variable "name_prefix" {
|
||||||
|
description = "Prefix for resource names"
|
||||||
|
type = string
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpc_id" {
|
||||||
|
description = "ID of the VPC"
|
||||||
|
type = string
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpc_cidr" {
|
||||||
|
description = "CIDR block of the VPC"
|
||||||
|
type = string
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "subnet_ids" {
|
||||||
|
description = "List of subnet IDs to associate with VPN endpoint"
|
||||||
|
type = list(string)
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "server_certificate_arn" {
|
||||||
|
description = "ARN of the server certificate in ACM"
|
||||||
|
type = string
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "client_certificate_arn" {
|
||||||
|
description = "ARN of the client root certificate in ACM (for certificate authentication)"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "client_cidr_block" {
|
||||||
|
description = "CIDR block for VPN clients"
|
||||||
|
type = string
|
||||||
|
default = "172.16.0.0/22"
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "split_tunnel" {
|
||||||
|
description = "Enable split tunnel (only route VPC traffic through VPN)"
|
||||||
|
type = bool
|
||||||
|
default = true
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "authentication_type" {
|
||||||
|
description = "Authentication type (certificate-authentication, directory-service-authentication, or federated-authentication)"
|
||||||
|
type = string
|
||||||
|
default = "certificate-authentication"
|
||||||
|
|
||||||
|
validation {
|
||||||
|
condition = contains(["certificate-authentication", "directory-service-authentication", "federated-authentication"], var.authentication_type)
|
||||||
|
error_message = "Authentication type must be certificate-authentication, directory-service-authentication, or federated-authentication."
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "active_directory_id" {
|
||||||
|
description = "ID of Active Directory (for directory-service-authentication)"
|
||||||
|
type = string
|
||||||
|
default = null
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "enable_saml_authentication" {
|
||||||
|
description = "Enable SAML-based federated authentication as second factor"
|
||||||
|
type = bool
|
||||||
|
default = false
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "saml_provider_arn" {
|
||||||
|
description = "ARN of the SAML provider (for federated-authentication)"
|
||||||
|
type = string
|
||||||
|
default = null
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "self_service_saml_provider_arn" {
|
||||||
|
description = "ARN of the IAM SAML identity provider for self-service portal"
|
||||||
|
type = string
|
||||||
|
default = null
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "dns_servers" {
|
||||||
|
description = "DNS servers for VPN clients"
|
||||||
|
type = list(string)
|
||||||
|
default = []
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "transport_protocol" {
|
||||||
|
description = "Transport protocol (tcp or udp)"
|
||||||
|
type = string
|
||||||
|
default = "udp"
|
||||||
|
|
||||||
|
validation {
|
||||||
|
condition = contains(["tcp", "udp"], var.transport_protocol)
|
||||||
|
error_message = "Transport protocol must be tcp or udp."
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_port" {
|
||||||
|
description = "VPN port (443 or 1194)"
|
||||||
|
type = number
|
||||||
|
default = 443
|
||||||
|
|
||||||
|
validation {
|
||||||
|
condition = contains([443, 1194], var.vpn_port)
|
||||||
|
error_message = "VPN port must be 443 or 1194."
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "session_timeout_hours" {
|
||||||
|
description = "Maximum VPN session duration in hours (8-24)"
|
||||||
|
type = number
|
||||||
|
default = 24
|
||||||
|
|
||||||
|
validation {
|
||||||
|
condition = var.session_timeout_hours >= 8 && var.session_timeout_hours <= 24
|
||||||
|
error_message = "Session timeout must be between 8 and 24 hours."
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "authorize_all_groups" {
|
||||||
|
description = "Authorize all groups for VPC access"
|
||||||
|
type = bool
|
||||||
|
default = true
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "access_group_id" {
|
||||||
|
description = "Access group ID for authorization (Active Directory group)"
|
||||||
|
type = string
|
||||||
|
default = null
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "additional_authorization_rules" {
|
||||||
|
description = "Additional authorization rules for specific CIDRs"
|
||||||
|
type = list(object({
|
||||||
|
cidr = string
|
||||||
|
authorize_all_groups = bool
|
||||||
|
access_group_id = string
|
||||||
|
description = string
|
||||||
|
}))
|
||||||
|
default = []
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "additional_routes" {
|
||||||
|
description = "Additional routes for VPN clients"
|
||||||
|
type = list(object({
|
||||||
|
cidr = string
|
||||||
|
description = string
|
||||||
|
}))
|
||||||
|
default = []
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "log_retention_days" {
|
||||||
|
description = "Number of days to retain VPN connection logs"
|
||||||
|
type = number
|
||||||
|
default = 30
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "enable_client_connect_handler" {
|
||||||
|
description = "Enable client connect handler (Lambda function for custom authorization)"
|
||||||
|
type = bool
|
||||||
|
default = false
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "client_connect_lambda_arn" {
|
||||||
|
description = "ARN of Lambda function for client connect handler"
|
||||||
|
type = string
|
||||||
|
default = null
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "client_login_banner" {
|
||||||
|
description = "Text to display in client login banner"
|
||||||
|
type = string
|
||||||
|
default = ""
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "vpn_ingress_cidr_blocks" {
|
||||||
|
description = "CIDR blocks allowed to connect to VPN"
|
||||||
|
type = list(string)
|
||||||
|
default = ["0.0.0.0/0"]
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "apply_security_group" {
|
||||||
|
description = "Apply security group to VPN endpoint"
|
||||||
|
type = bool
|
||||||
|
default = true
|
||||||
|
}
|
||||||
|
|
||||||
|
variable "tags" {
|
||||||
|
description = "Tags to apply to resources"
|
||||||
|
type = map(string)
|
||||||
|
default = {}
|
||||||
|
}
|
||||||
157
terraform/scripts/export-vpn-config.sh
Executable file
157
terraform/scripts/export-vpn-config.sh
Executable file
|
|
@ -0,0 +1,157 @@
|
||||||
|
#!/bin/bash
|
||||||
|
# Export AWS Client VPN configuration
|
||||||
|
# This script downloads the VPN client configuration file
|
||||||
|
|
||||||
|
set -e
|
||||||
|
|
||||||
|
# Colors for output
|
||||||
|
RED='\033[0;31m'
|
||||||
|
GREEN='\033[0;32m'
|
||||||
|
YELLOW='\033[1;33m'
|
||||||
|
BLUE='\033[0;34m'
|
||||||
|
NC='\033[0m' # No Color
|
||||||
|
|
||||||
|
echo_info() {
|
||||||
|
echo -e "${GREEN}[INFO]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_warn() {
|
||||||
|
echo -e "${YELLOW}[WARN]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_error() {
|
||||||
|
echo -e "${RED}[ERROR]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_step() {
|
||||||
|
echo -e "${BLUE}[STEP]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Check prerequisites
|
||||||
|
if ! command -v aws &> /dev/null; then
|
||||||
|
echo_error "AWS CLI is not installed. Please install AWS CLI first."
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
if ! aws sts get-caller-identity &> /dev/null; then
|
||||||
|
echo_error "AWS credentials are not configured. Please configure AWS credentials first."
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Get VPN endpoint ID from Terraform output or as parameter
|
||||||
|
if [ -z "$1" ]; then
|
||||||
|
echo_info "No VPN endpoint ID provided, attempting to get from Terraform..."
|
||||||
|
|
||||||
|
# Try to get from terraform output
|
||||||
|
if [ -f "terraform.tfstate" ]; then
|
||||||
|
VPN_ENDPOINT_ID=$(terraform output -raw vpn_endpoint_id 2>/dev/null || echo "")
|
||||||
|
fi
|
||||||
|
|
||||||
|
if [ -z "$VPN_ENDPOINT_ID" ]; then
|
||||||
|
echo_error "Could not find VPN endpoint ID."
|
||||||
|
echo_error "Usage: $0 <vpn-endpoint-id> [region] [output-dir]"
|
||||||
|
echo_error "Or run this script from the terraform deployment directory"
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
else
|
||||||
|
VPN_ENDPOINT_ID="$1"
|
||||||
|
fi
|
||||||
|
|
||||||
|
REGION="${2:-us-east-1}"
|
||||||
|
OUTPUT_DIR="${3:-./vpn-config}"
|
||||||
|
CERT_DIR="${4:-./vpn-certificates}"
|
||||||
|
|
||||||
|
echo_info "VPN Endpoint ID: ${VPN_ENDPOINT_ID}"
|
||||||
|
echo_info "AWS Region: ${REGION}"
|
||||||
|
echo_info "Output Directory: ${OUTPUT_DIR}"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
# Create output directory
|
||||||
|
mkdir -p "${OUTPUT_DIR}"
|
||||||
|
|
||||||
|
echo_step "Step 1: Export VPN client configuration"
|
||||||
|
echo_info "Downloading VPN configuration from AWS..."
|
||||||
|
|
||||||
|
# Export the configuration
|
||||||
|
aws ec2 export-client-vpn-client-configuration \
|
||||||
|
--client-vpn-endpoint-id "${VPN_ENDPOINT_ID}" \
|
||||||
|
--region "${REGION}" \
|
||||||
|
--output text > "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
|
||||||
|
echo_info "VPN configuration downloaded to: ${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 2: Add client certificate and key to configuration"
|
||||||
|
|
||||||
|
# Check if certificate files exist
|
||||||
|
if [ ! -f "${CERT_DIR}/client.crt" ] || [ ! -f "${CERT_DIR}/client.key" ]; then
|
||||||
|
echo_warn "Client certificates not found in ${CERT_DIR}"
|
||||||
|
echo_warn "You'll need to manually add <cert> and <key> sections to the .ovpn file"
|
||||||
|
echo_warn "Or specify the correct certificate directory as 4th parameter"
|
||||||
|
else
|
||||||
|
echo_info "Adding client certificate and key to configuration..."
|
||||||
|
|
||||||
|
# Append certificate and key to the configuration
|
||||||
|
echo "" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo "<cert>" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
cat "${CERT_DIR}/client.crt" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo "</cert>" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo "" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo "<key>" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
cat "${CERT_DIR}/client.key" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
echo "</key>" >> "${OUTPUT_DIR}/client-config.ovpn"
|
||||||
|
|
||||||
|
echo_info "Client certificate and key added to configuration"
|
||||||
|
fi
|
||||||
|
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 3: Create platform-specific configurations"
|
||||||
|
|
||||||
|
# Copy for different platforms
|
||||||
|
cp "${OUTPUT_DIR}/client-config.ovpn" "${OUTPUT_DIR}/code-server-vpn.ovpn"
|
||||||
|
|
||||||
|
echo_info "Configuration files created:"
|
||||||
|
echo " ${OUTPUT_DIR}/client-config.ovpn - Original configuration"
|
||||||
|
echo " ${OUTPUT_DIR}/code-server-vpn.ovpn - Ready to import"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Installation Instructions:"
|
||||||
|
echo ""
|
||||||
|
echo "📱 macOS:"
|
||||||
|
echo " 1. Install Tunnelblick: https://tunnelblick.net/downloads.html"
|
||||||
|
echo " 2. Double-click code-server-vpn.ovpn"
|
||||||
|
echo " 3. Click 'Connect'"
|
||||||
|
echo ""
|
||||||
|
echo "🪟 Windows:"
|
||||||
|
echo " 1. Install OpenVPN Connect: https://openvpn.net/client-connect-vpn-for-windows/"
|
||||||
|
echo " 2. Import code-server-vpn.ovpn"
|
||||||
|
echo " 3. Click 'Connect'"
|
||||||
|
echo ""
|
||||||
|
echo "🐧 Linux:"
|
||||||
|
echo " 1. Install OpenVPN:"
|
||||||
|
echo " sudo apt-get install openvpn # Debian/Ubuntu"
|
||||||
|
echo " sudo yum install openvpn # RHEL/CentOS"
|
||||||
|
echo " 2. Connect using:"
|
||||||
|
echo " sudo openvpn --config ${OUTPUT_DIR}/code-server-vpn.ovpn"
|
||||||
|
echo ""
|
||||||
|
echo "📱 iOS:"
|
||||||
|
echo " 1. Install OpenVPN Connect from App Store"
|
||||||
|
echo " 2. Transfer code-server-vpn.ovpn to your device"
|
||||||
|
echo " 3. Import and connect"
|
||||||
|
echo ""
|
||||||
|
echo "🤖 Android:"
|
||||||
|
echo " 1. Install OpenVPN for Android from Play Store"
|
||||||
|
echo " 2. Transfer code-server-vpn.ovpn to your device"
|
||||||
|
echo " 3. Import and connect"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_info "✅ VPN configuration export complete!"
|
||||||
|
echo_warn "🔒 Please distribute this configuration securely to authorized users only"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_info "To test the VPN connection:"
|
||||||
|
echo " 1. Connect to VPN using the configuration file"
|
||||||
|
echo " 2. Access code-server at the private ALB address"
|
||||||
|
echo " 3. Check CloudWatch Logs for VPN connection logs:"
|
||||||
|
echo " aws logs tail /aws/vpn/<prefix> --follow"
|
||||||
177
terraform/scripts/generate-vpn-certificates.sh
Executable file
177
terraform/scripts/generate-vpn-certificates.sh
Executable file
|
|
@ -0,0 +1,177 @@
|
||||||
|
#!/bin/bash
|
||||||
|
# Generate certificates for AWS Client VPN
|
||||||
|
# This script creates server and client certificates required for VPN authentication
|
||||||
|
|
||||||
|
set -e
|
||||||
|
|
||||||
|
# Colors for output
|
||||||
|
RED='\033[0;31m'
|
||||||
|
GREEN='\033[0;32m'
|
||||||
|
YELLOW='\033[1;33m'
|
||||||
|
BLUE='\033[0;34m'
|
||||||
|
NC='\033[0m' # No Color
|
||||||
|
|
||||||
|
echo_info() {
|
||||||
|
echo -e "${GREEN}[INFO]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_warn() {
|
||||||
|
echo -e "${YELLOW}[WARN]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_error() {
|
||||||
|
echo -e "${RED}[ERROR]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
echo_step() {
|
||||||
|
echo -e "${BLUE}[STEP]${NC} $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Check prerequisites
|
||||||
|
check_prerequisites() {
|
||||||
|
echo_info "Checking prerequisites..."
|
||||||
|
|
||||||
|
if ! command -v openssl &> /dev/null; then
|
||||||
|
echo_error "OpenSSL is not installed. Please install OpenSSL first."
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
if ! command -v aws &> /dev/null; then
|
||||||
|
echo_error "AWS CLI is not installed. Please install AWS CLI first."
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
if ! aws sts get-caller-identity &> /dev/null; then
|
||||||
|
echo_error "AWS credentials are not configured. Please configure AWS credentials first."
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
echo_info "All prerequisites met!"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Configuration
|
||||||
|
CERT_DIR="${1:-./vpn-certificates}"
|
||||||
|
REGION="${2:-us-east-1}"
|
||||||
|
COMMON_NAME="${3:-code-server-vpn}"
|
||||||
|
|
||||||
|
echo_info "Certificate Directory: ${CERT_DIR}"
|
||||||
|
echo_info "AWS Region: ${REGION}"
|
||||||
|
echo_info "Common Name: ${COMMON_NAME}"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
# Create certificate directory
|
||||||
|
mkdir -p "${CERT_DIR}"
|
||||||
|
cd "${CERT_DIR}"
|
||||||
|
|
||||||
|
echo_step "Step 1: Generate CA private key and certificate"
|
||||||
|
echo_info "Creating Certificate Authority (CA)..."
|
||||||
|
|
||||||
|
# Generate CA private key
|
||||||
|
openssl genrsa -out ca.key 2048
|
||||||
|
|
||||||
|
# Generate CA certificate
|
||||||
|
openssl req -new -x509 -days 3650 -key ca.key -out ca.crt -subj "/C=US/ST=State/L=City/O=Organization/OU=IT/CN=${COMMON_NAME}-ca"
|
||||||
|
|
||||||
|
echo_info "CA certificate created: ca.crt"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 2: Generate server private key and certificate"
|
||||||
|
echo_info "Creating server certificate..."
|
||||||
|
|
||||||
|
# Generate server private key
|
||||||
|
openssl genrsa -out server.key 2048
|
||||||
|
|
||||||
|
# Generate server certificate signing request (CSR)
|
||||||
|
openssl req -new -key server.key -out server.csr -subj "/C=US/ST=State/L=City/O=Organization/OU=IT/CN=${COMMON_NAME}-server"
|
||||||
|
|
||||||
|
# Sign server certificate with CA
|
||||||
|
openssl x509 -req -days 3650 -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt
|
||||||
|
|
||||||
|
echo_info "Server certificate created: server.crt"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 3: Generate client private key and certificate"
|
||||||
|
echo_info "Creating client certificate..."
|
||||||
|
|
||||||
|
# Generate client private key
|
||||||
|
openssl genrsa -out client.key 2048
|
||||||
|
|
||||||
|
# Generate client certificate signing request (CSR)
|
||||||
|
openssl req -new -key client.key -out client.csr -subj "/C=US/ST=State/L=City/O=Organization/OU=IT/CN=${COMMON_NAME}-client"
|
||||||
|
|
||||||
|
# Sign client certificate with CA
|
||||||
|
openssl x509 -req -days 3650 -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out client.crt
|
||||||
|
|
||||||
|
echo_info "Client certificate created: client.crt"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 4: Upload certificates to AWS Certificate Manager"
|
||||||
|
echo_info "Uploading server certificate to ACM..."
|
||||||
|
|
||||||
|
# Upload server certificate
|
||||||
|
SERVER_CERT_ARN=$(aws acm import-certificate \
|
||||||
|
--certificate fileb://server.crt \
|
||||||
|
--private-key fileb://server.key \
|
||||||
|
--certificate-chain fileb://ca.crt \
|
||||||
|
--region ${REGION} \
|
||||||
|
--tags Key=Name,Value=${COMMON_NAME}-server Key=Purpose,Value=VPN-Server \
|
||||||
|
--query CertificateArn \
|
||||||
|
--output text)
|
||||||
|
|
||||||
|
echo_info "Server certificate uploaded: ${SERVER_CERT_ARN}"
|
||||||
|
|
||||||
|
# Upload client certificate (root CA)
|
||||||
|
echo_info "Uploading client root certificate to ACM..."
|
||||||
|
CLIENT_CERT_ARN=$(aws acm import-certificate \
|
||||||
|
--certificate fileb://ca.crt \
|
||||||
|
--private-key fileb://ca.key \
|
||||||
|
--region ${REGION} \
|
||||||
|
--tags Key=Name,Value=${COMMON_NAME}-client-root Key=Purpose,Value=VPN-Client-Root \
|
||||||
|
--query CertificateArn \
|
||||||
|
--output text)
|
||||||
|
|
||||||
|
echo_info "Client root certificate uploaded: ${CLIENT_CERT_ARN}"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Step 5: Save certificate ARNs to file"
|
||||||
|
|
||||||
|
cat > certificate-arns.txt <<EOF
|
||||||
|
Server Certificate ARN: ${SERVER_CERT_ARN}
|
||||||
|
Client Root Certificate ARN: ${CLIENT_CERT_ARN}
|
||||||
|
EOF
|
||||||
|
|
||||||
|
cat > terraform-vars.txt <<EOF
|
||||||
|
# Add these to your terraform.tfvars file:
|
||||||
|
enable_vpn = true
|
||||||
|
vpn_server_certificate_arn = "${SERVER_CERT_ARN}"
|
||||||
|
vpn_client_certificate_arn = "${CLIENT_CERT_ARN}"
|
||||||
|
EOF
|
||||||
|
|
||||||
|
echo_info "Certificate ARNs saved to certificate-arns.txt"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Summary of Generated Files:"
|
||||||
|
echo " ca.key - CA private key (keep secure!)"
|
||||||
|
echo " ca.crt - CA certificate"
|
||||||
|
echo " server.key - Server private key (keep secure!)"
|
||||||
|
echo " server.crt - Server certificate"
|
||||||
|
echo " client.key - Client private key (distribute to VPN users)"
|
||||||
|
echo " client.crt - Client certificate (distribute to VPN users)"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_step "Important Notes:"
|
||||||
|
echo " 1. Store ca.key and server.key securely (never share these!)"
|
||||||
|
echo " 2. Distribute client.key and client.crt to VPN users"
|
||||||
|
echo " 3. Add the certificate ARNs to your terraform.tfvars:"
|
||||||
|
cat terraform-vars.txt
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_info "✅ Certificate generation complete!"
|
||||||
|
echo_warn "🔒 Please backup the ${CERT_DIR} directory securely"
|
||||||
|
echo ""
|
||||||
|
|
||||||
|
echo_info "Next steps:"
|
||||||
|
echo " 1. Add the certificate ARNs to terraform.tfvars"
|
||||||
|
echo " 2. Set enable_vpn = true in terraform.tfvars"
|
||||||
|
echo " 3. Run terraform apply"
|
||||||
|
echo " 4. Export VPN client configuration using export-vpn-config.sh"
|
||||||
Loading…
Reference in a new issue