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, ...

This repository contains a guide and templates for using iptables, here you will find an introduction to iptables, a powerful tool for configuring and managing firewall rules on Linux systems.

Iptables, more properly referred to as “iptables/netfilter” because of the two modules that are involved — the userspace module “iptables” and the kernel ...

Linux may have a reputation for security, but it isn’t perfect. Many distributions also don’t have the best security defaults, so it’s best to implement some best practices for security or use open ...

Mastering iptables could take a while, but if you have a few rules to cover the basic security needs, you'll be well on your way to protecting your Linux system. Jack Wallen explains some key rules to ...

I've turned over a new leaf in how I approach security. I've mentioned in the past that I haven't always understood, or given too much respect to the security community. When vulnerabilities like ...

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.