No web site is complete without a list of
suggested links. We've included each and every link listed in
Hacking Linux Exposed, as well as many others that you
may find useful to help protect your system.
If you have suggestions, changes, or additions you'd like to see,
Articles by HLE authors
Vendor Mailing Lists
Security Mailing Lists
- SecurityFocus lists
Bugtraq, Incidents, Vuln-dev, Focus-Linux, SF-News and many more.
Excellent weekly updates on Linux security.
Original Firewalls mailing list, unmoderated
Firewall mailing list, moderated by firewall guru Marcus Ranum.
Sans weekly and monthly newsletters
Security Alert for Enterprise Resources
Security and Hacking Websites
Linux security news and resources.
System Administration, Networking and Security Organization
Computer Emergency Response Team
Computer Incident Advisory Capability
- Security Focus
Extensive vulnerability database, Custom security articles, and Security Focus mailing lists
- Security Portal
Portal to many security sites and articles.
- Neohapsis Archives
Achives of many security and vendor lists
Nmap, list archives, exploits, and other excellent reading
- Packet Factory
Network and security tools galore
News, crypto, downloads, and the hacked web page mirror.
- Phrack Magazine
Phrack Magazine and archives, a must read.
- 2600 The Hacker Quarterly
- L0pht Heavy Industries
Now part of .
News, security archives, exploits, and more.
Searchable and downloadable database of hacking tools, countermeasures and documents
Security, Investigative, and Testing Tools/Suites
The best portscanning tool around
List Open Files shows open files, sockets, pipes, and more.
Snort Intrusion Detection System
The Computer Oracle and Password System, system vulnerability scanner.
TAMU's system vulnerability scanner
Satan, the first public network scanner
Security Administrator's Integrated Network Tool -- An enhancement to Satan
Security Auditor's Research Assistant -- our favorite Satan spinoff
client/server vulnerability scanner, updated continuously.
- Toneloc modem war dialer
File Integrity Tools
Log Analysis Tools
Simple Watchdog, perl log analysis tool.
A cron-style log analysis tool.
An advanced dynamic log analysis tool.
Port Scan Detectors
- PGP Freeware
Pretty Good Privacy encryption software
Fully open source PGP by the GNU project
OpenSSL (Secure Sockets Layer) libraries
SSL Tunneling software, used to encrypt arbitrary cleartext protocols.
Secure replacements for the cleartext telnet, rlogin, rsh, rcp, and ftp protocols. Contains links to other SSH versions as well.
- SSH FAQ
Enforcing Strong Passwords
Password Cracking Dictonaries
Web Servers and Dynamic Content
Linux Hardening Tools
Tools for preventing buffer overflows.
Linux hardening scripts.
- Openwall Kernel Patches
Linux kernel security patches by Solar Designer.
Linux Intrusion Detection System, kernel patch for extreemly advanced access controls.
Access Controls and Firewalls
Firewall Configuration Tools
Open Source Firewalls
Assorted Linux and Open Source links