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 ...

A new Linux NetFilter kernel flaw has been discovered, allowing unprivileged local users to escalate their privileges to root level, allowing complete control over a system. The CVE-2023-32233 ...

Sophos researcher Nick Gregory has uncovered a dangerous security bug in Linux's netfilter application which could enable a local attacker to escalate privileges on vulnerable machines and carry out a ...

Check Point Software Technologies has the largest market share of any firewall vendor with their Firewall-1 (FW-1) product, and Nokia manufactures several hardware appliances together with an ...

Following the publication of “Taming the Wild Netfilter” in the September 2001 issue of LJ [/article/4815], I received a number of e-mails, most asking for more detailed information on working with ...

When I first started using Linux, back in '97, working with the built-in firewall was not something just anyone could do. In fact, it was quite complicated. Starting around 1998, if you want to manage ...

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

Linux is constantly evolving, and with it the tools that its fans use on a daily basis. However, some of the classics such as iptables , which has been replaced by nftables , are now not only outdated ...