How to Turn Anything into a Router
3 hours ago
- #Linux Networking
- #Homebrew Hardware
- #DIY Router
- You can create a router from any device resembling a computer, such as mini-PCs, old laptops, or SBCs, by installing Linux and configuring network interfaces.
- Hardware requirements include at least two Ethernet interfaces (can use USB-Ethernet dongles), with examples showing capable performance even on low-power chips like a Celeron 3205U.
- Setup involves configuring interfaces (eth0 for WAN, eth1 for LAN, and wlan0 for wireless bridged together), enabling IP forwarding, and using packages like hostapd, dnsmasq, and nftables for firewall and NAT.
- The process includes steps like persistent interface naming, creating wireless networks, configuring DHCP/DNS with dnsmasq, and optional serial port management for headless access.
- After configuration, verify functionality through firewall rules, DHCP leases, and reliability after reboots, with potential for advanced features like VLANs, VPNs, or monitoring.