All modern operating systems come equipped with a firewall – a software application that regulates network traffic to a computer. Firewalls create a barrier between a trusted network (like an office ...

Back in 2002 I wrote one of the first tutorials in Italian about how to use the then excitingly new 'iptables' command and firewalling support in linux. This tutorial was quite popular at the time, ...

nftables provides a simpler, more efficient alternative to iptables, with unified IPv4/IPv6 handling. Features like rule tracing and multi-action rules in nftables enhance network management.