It's no doubt that one of the leaders for network equipment is Cisco Systems. Newer Cisco devices are starting to use what Cisco calls its "="" operating="" system"="">, which is a customized flavor ...

I've been writing a multipart series on building a transparent (bridging) firewall using Linux. Specifically, I'm using the distribution OpenWrt running on a Linksys WRT54GL broadband router, a ...

In today's open source roundup: Six GUI firewall management applications in Linux. Plus: Linux Lite 2.2 released, and the story of how Kali Linux was created The command line is a powerful tool for ...

A multi-stage attack on Linux devices began with an exposed F5 BIG-IP edge appliance and pivoted to an internal Confluence ...

Version 2.6.12 of the Linux kernel is likely to include packet filtering that will work with IPv6, the latest version of the Internet Protocol. Netfilter/iptables, the firewall engine that is part of ...

I need to setup a firewall on a box that only has ipchains installed. No, I'm afraid, I can't change that. I would<br>preffer to setup the firewall using ipchains, if that is ok.<br><br>The given box ...

Simone Margaritelli, the VP of Research at Zimperium, has created a Linux port of Little Snitch, a wildly popular macOS firewall application. Named OpenSnitch, the Linux port works on the same ...

As some of you know from my last dumb post about mounting the floppy, I am new to Linux. I would like to learn though the feasibility of setting up a Linux machine as a firewall for a dedicated ...

The ufw (uncomplicated firewall) represents a serious simplification to iptables and, in the years that it’s been available, has become the default firewall on systems such as Ubuntu and Debian. And, ...

Dear readers, I appear to have set a Paranoid Penguin record—six months spent on one article series. (It has consisted of five installments, with a one-month break between the second and third pieces.