service-dhcp-whitelist/systemd/dhcp-whitelist.service
Marcus Penate 141ac1c9dd Initial commit: DHCP whitelist service for direct link connections
Features:
- Docker-based DHCP server with MAC address whitelisting
- Binds to specific ethernet interface only
- NO DNS/gateway advertised (direct link only, not a router)
- Configurable network parameters (subnet, DHCP range, lease times)
- Systemd service integration for Arch/Manjaro
- Test environment with isolated network (172.20.0.0/24)
- Auto-configuration script to detect network settings
- Complete Makefile with management targets

Security:
- Only responds to whitelisted MAC addresses
- deny unknown-clients configuration
- Runs in Docker container for isolation

Configuration:
- Copy .example files to create your config
- interface.conf: Network interface to bind to
- whitelist.conf: Allowed MAC addresses
- network.conf: Network parameters (optional)
2025-08-27 20:46:29 -04:00

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[Unit]
Description=DHCP Whitelist Service
After=network.target docker.service
Requires=docker.service
[Service]
Type=simple
Restart=always
RestartSec=10
WorkingDirectory=/opt/dhcp-whitelist
Environment="CONFIG_DIR=/etc/dhcp-whitelist"
# Pre-start: Build the image
ExecStartPre=/usr/bin/docker-compose build
# Start the service
ExecStart=/usr/bin/docker-compose up
# Stop the service
ExecStop=/usr/bin/docker-compose down
# Reload config by restarting containers
ExecReload=/usr/bin/docker-compose restart
StandardOutput=journal
StandardError=journal
[Install]
WantedBy=multi-user.target