See also:

• Computers: Security: News and Media: Magazines and E-zines  (20)
• Computers: Software: Operating Systems: Linux: Support: Documentation  (16)

• Firewall Piercing mini-HOWTO - Tutorial on using ppp over telnet to do network stuff transparently through an Internet firewall. (François-René Rideau)
• Firewalling and Proxy Server HOWTO - Teaches the basics of firewall systems and give you some detail on setting up both a filtering and proxy firewall on a Linux based PC, by Mark Grennan.
• Installing a firewall, Part 1 - Get the details of a secure Trustix 1.1 installation
• Introduction to Linux Networking and Security - Brief introduction to the IP networking services, how to configure them, and how to set up a relatively secure Linux workstation. Published in ACM Crossroads, the ACM student magazine.
• Linux Bridge+Firewall Mini-HOWTO - A tutorial on how to setup a bridge and a firewall with Linux, by Peter Breuer.
• Linux Firewall Howto - Firewall HOWTO collection, ids, nids, hardening, penetration testing, auditing
• 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 - Security issues that face the administrator, security philosophy, examples of how to secure the system from intruders.
• Linux Security HOWTO - General 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 your Linux system from intruders.
• Linuxs security basics - How to achieve the goal of every system admin: boring, predictable computers
• Network Security Information: UNIX - Network Security Library has links to many UNIX (and, especially, Linux) security articles on host hardening, security admin guides, and special purpose hardening tips.
• Ritter's Crypto Glossary and Dictionary of Technical Cryptography - Hyperlinked definitions and discussions of many cryptographic, mathematics, logic, statistics, and electronics terms used in cipher construction and analysis.
• Rusty's Remarkably Unreliable Guides - Netfilter project provides HOWTOs for packet filtering, NAT and netfilter code hacking for Linux.
• Secure POP via SSH mini-HOWTO - Explains how to set up secure POP connections using ssh, by Manish Singh.
• Securing NIS - Provides a checklist on how to secure UNIX/Linux NIS (formerly YP) services in an intranet environment.
• Setting up a secure Linux server - Setting up a secure Linux server using RedHat and the Linux From Scratch system.
• A Short History of Cryptography - A brief historical analysis of the management of cryptography.
• A Simple Scheme to Make Passwords Based on One-Way Functions Much Harder to Crack - Discusses the possibility that crackers might generate and distribute a massive list of encrypted passwords.
• UnOfficial SELinux FAQ - A technical FAQ for the NSA SELinux project, which covers installation and implementation issues.
• YoLinux: Internet Server Security HowTo and Tutorial - This tutorial covers the installation and use of hacker protection software such as Portsentry, tripwire, ssh. It also covers configuration and administration steps to make a Linux server secure against hackers.