A Survey of the 7 Configuration Changes That Turn a Multi-homed Linux Host into a Switch/Router
Summary
The article surveys seven Linux kernel-based changes to turn a multi-homed Linux host into a switch/router. It covers IP forwarding, bridging, nftables firewall rules, conntrack, NAT, DHCP/DNS with dnsmasq, and AP mode with hostapd, plus verification commands. It's a practical reference for IT pros building small-business or home networks using open-source tools.