RootPrompt.org: They Can't Crack What They Can't Find

Sep 11, 2000, 18:10 (1 Talkback[s])
(Other stories by noeld)

[ Thanks to Noel for this link. ]

"The Internet today is a jungle full of predators. Some of these predators are trying to crack your machine others are just looking for a machine to crack. By using the firewalling tools built into the Linux kernel it is possible to make a desktop machine virtually disappear from the crackers view."

"In this article I will describe how to hide a machine running Linux that uses PPP over a modem to connect to the Internet. I will use ipchains and the firewalling built into the Linux kernel to protect the services that are running on this machine from connections across the PPP interface."

"For this example, I will use a Debian system with a 2.2.15 Linux kernel on a Debian system. You should note that the firewalling code in the 2.4 Kernel has undergone a rewrite, but that the examples in this article will still work by loading the ipchains compatibility module."

Complete Story

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• LinuxPlanet: Linux Networking: Using Ipchains(Jul 24, 2000)
• Byte.com: Firewalls For Home Users Are Essential - Secure Your Castle's Cyberperimeter(May 09, 2000)
• InfoWorld: Make sure that those back doors stay locked by using Linux-based... [pmfirewall](Apr 29, 2000)
• LinuxMall.com: Securing Linux and IP-Masquerading(Mar 15, 2000)
• Computer Bits: Firewalling with iptables(Feb 28, 2000)
• Security Portal: Firewalling with IPF(Feb 17, 2000)
• Chicago Tribune: Protecting your Linux machine from the big, bad Internet(Jan 31, 2000)
• LinuxPlanet: Ipchains: Easy Links to the Net(Nov 17, 1999)
• Linux.com: Deploying a Linux Firewall(Oct 09, 1999)