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.

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 ...

Let's talk about protecting your network from what people can fetch. I'm going to take a twisty road to get there, so please stick with me. I wrote a lengthy report ...

Linux offers many classic commands, but some are already outdated, insecure, or are now inefficient. We show you which ...

Iptables is a tool that has been used for more than 20 years to allow administrators to manage packet filter rules that shape the behavior of the Linux kernel's network stack. Within each table, rules ...

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 ...

After securing systems by hiding them completely from the network/internet using Single Packet Authorization, I’ve recently been interested in doing more so-called ‘active’ defense, by implementing ...

When deciding on a firewall implementation, most Unix-savvy administrators have usually chosen to use ipfilter on OpenBSD for their combination of capabilities and stability, as the capabilities of ...