Language Selection

English French German Italian Portuguese Spanish

Linux 101: Configuring and managing iptables to improve network security

Filed under
HowTos

This document describes how important good iptables management is to tight security in a Linux networking environment.

Basics of firewalls

Every new Linux user will at some point start wondering about installing a firewall application on this strange new operating system. Eventually everyone also runs across the concept of iptables. Early on, one might not know what iptables means, or even have heard the term. This is quite a disappointing state of affairs, considering how important good iptables management is to tight security in a Linux networking environment.

I'm going to assume you've heard of a firewall and have some vague notion of what that means in relation to computers and networking. As a quick summation, though, a firewall basically provides and enforces rules for allowing or denying network access on specific ports, from or to specific networked computers, and so on.

Full Story.

More in Tux Machines

More AMD Radeon R9 Fury Linux Benchmarks

Continuing on from yesterday's first Linux review of the AMD Radeon R9 Fury, here are some more Catalyst Linux benchmarks from this $550 graphics card. Since yesterday's review of the R9 Fury on Ubuntu Linux I have run some more tests covering a few other test profiles as well as delivering some more 1920 x 1080 and 2560 x 1440 (rather than 4K) benchmarks for those wishing to run their own side-by-side comparisons against this air-cooled Fiji graphics card with 4GB of High Bandwidth Memory. Read more

Lubuntu 15.10 Alpha 2 Is Ready for Download, Still Using the LXDE Desktop Environment

The development team behind Lubuntu, an open-source and freely distributed flavor of the popular Ubuntu Linux operating system, announced a few minutes ago the release of the second Alpha build for the upcoming Lubuntu 15.10 (Wily Werewolf) distribution. Read more

Ubuntu Kylin 15.10 Alpha 2 Is Out for Testing with Linux Kernel 4.1, More

The development team behind the Ubuntu Kylin computer operating system have announced earlier today the immediate availability for download and testing of the second Alpha build of the upcoming Ubuntu Kylin 15.10 (Wily Werewolf) distro. Read more

Linux-powered smart sniper rifle can be hacked

Two years ago, TrackingPoint burst on to the scene with a Linux-powered smart sniper rifle that took the guesswork out of killshots. Now, however, a pair of hackers have figured out how to make it miss every single time. Read more