Networking
From LinuxizeNet
Networking notes — routers, switches, DNS, TLS and the things that only break once a year.
Linux router[edit]
Linux router with WAN, LAN and DMZ
IP forwarding on and off, interfaces in systemd-networkd, and a default-deny iptables policy publishing a mail and a web server from the DMZ.
net.ipv4.ip_forward=1
DHCP and NTP for the LAN
Serve addresses from the router and push it as the LAN's NTP source.
EmitNTP=yes
