As usual, long story short: I’ve to setup a firewall to log traffic, block some stuff and do some other things.– epel repo is required –The system is made of a single CentOS machine with 2 physical network adapters:1. eth0, connected to WAN, static IP address 192.168.0.32. eth1, connected to LAN, static IP address 10.0.0.1/24.:. Network adapters configuration WAN network adapter:LAN network adapter:.:. DHCP Since we want our machine to act as a router, a pretty important part of it is a DHCP server. …