Surf these sites: Firewall Piercing mini-HOWTO -- Tutorial on using ppp over telnet to do network stuff transparently through an Internet firewall. (François-René Rideau) Firewall and Proxy server HOWTO for Linux -- Build an inexpensive powerful firewall, here''s how! Linux Administrator''s Security Guide -- A comprehensive security guide aimed at Linux amdinistrators and users, available online in Acrobat PDF format, by Kurt Seifried. Linux Bridge+Firewall Mini-HOWTO -- A tutorial on how to setup a bridge and a firewall with Linux, by Peter Breuer. Linux IPCHAINS-HOWTO -- Describes how to obtain, install and configure the enhanced IP firewalling chains software for Linux, and how they might be used, by Paul Russell. Linux Security HOWTO -- Provides an overview of security issues that face the administrator of Linux systems. It covers general security philosophy and a number of specific examples of how to better secure a Linux system from intruders, by Kevin Fenzi & Dave Wreski. Secure POP via SSH mini-HOWTO -- Explains how to set up secure POP connections using ssh, by Manish Singh. Using Term to Pierce an Internet Firewall -- Tutorial on using ''term'' to do network stuff through a TCP firewall that you''re not supposed to be able to, by Barak Pearlmutter.
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