Known vulnerabilities on the Linux system with detailed description.

Companion Website to Hacking Linux Exposed, Osborne/McGraw-Hill. Source code from the book, updates, and other tools to secure your Linux system.

Information collected from many sources: feature articles, advisories, news, documentation, forums, links.

This site on Linux and security covers firewalls (iptables), intrusion detection systems (snort), securing services, and Linux security in general. The aim is to provide information about protection, detection, and reaction with respect to attacks.

A kernel module that detects and stops overflow attacks, like Linux Buffer Overflow attack security, which aim to get an interactive access to the system.

This is a companion website for "SSH: The Secure Shell The Definitive Guide" by Daniel Barrett and Richard Silverman (O'Reilly, 2003). It contains technical details on the SSH as well as sample book material.

Not only does it encrypt data, it also hides it such that it cannot be proved to be there.