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• How To: Security quick start how-to for Linux (LDP how-to index)
• How To: Linux security how-to (LDP how-to index)
• Interview with Joe Grand: Hacking has its boundaries (SearchEnterpriseLinux.com)
• Article: Linux security -- the seven deadly sins (SearchEnterpriseLinux.com)
• Dos & don'ts: Smoothing out patch-management woes (SearchEnterpriseLinux.com)
• Article: Don't dismiss possibility of malicious code on Linux (SearchEnterpriseLinux.com)
• Webcast: Allocating your diminishing security resources (SearchSecurity.com)
• Article: Common security mistakes still haunt enterprises (SearchSecurity.com)
• Tip: What to do if you find a security problem (SearchSecurity.com)

• BlackBerry reveals bank's secrets (Wired)
• 'Disgruntled employee' hacks own company's computer system (Silicon.com)
• Virus hoaxes and the real dangers they pose (SecurityFocus)
• Bank "human error" opens e-mail addresses (ZDNet)
• Oops! True IT blooper #95: An alarming entry to the blooper zone (SearchWin2000.com)
• Hacker horror stories (SearchSecurity.com, excerpted from InformIT)
• Opinion: Surviving the Worst-Case Scenario (NewsFactor Network)

Security Tools

• How to be a 'security warrior,' part 1
  Security Warrior co-author Anton Chuvakin describes several useful security tools you can use to outfit your secure Linux enterprise, including Nessus, Bastille, and nmap.
• Tip: Vulnerability scanning with Nessus
  Learn how Nessus works.
• Commentary: Addition of IPsec locks down 2.6 kernel
  Site expert Ken Milberg discusses the security improvements built into the 2.6 kernel -- most importantly, IPsec and Netfilter.
• Free chapter download: Internet Protocol Security: IPsec -- Chapter 17 of Red Hat: The Complete Reference Enterprise Linux and Fedora Edition with DVD
• Administrator tip: Netstat: A small but powerful tool for administrators
  Learn more about Netstat in this user-submitted tip.
• Expert webcast: How to use open source tools to build a complete intrusion-detection system
  In this webcast, Rafeeq Ur Rehman, author of Intrusion Detection with SNORT: Advanced IDS Techniques Using SNORT, Apache, MySQL, PHP, and ACID, teaches you how to build your intrusion-detection system.
• Free chapter download: Using ACID and SnortSnarf with Snort -- Chapter 6 of Intrusion Detection with SNORT
• Products & vendors: Intrusion detection product guide
  

• Q&A: Nab hackers with Snort on Linux (SearchEnterpriseLinux.com)
• White paper: Using ACID and SnortSnarf with Snort (Prentice Hall PTR)
• How-to: Security quick start how-to for Linux (LDP how-to index)
• How-to: Snort setup (LDP how-to index)
• Expert Advice: Intrusion-detection system for Linux Red Hat (SearchSecurity.com)
• Article: Users not so ready to declare IDS dead (SearchSecurity.com)
• Article: Intrusion detection with Debian GNU/Linux (LinuxFocus)
• Honeypots: Simple, Cost-Effective Detection (SecurityFocus)
• How-to: Peering Over the Firewall -- Using Snort and a homemade read-only cable to follow network traffic (Linux Journal)
• News: Stumbler mapping networks for future attacks (SearchSecurity.com)
• Column: Detecting server compromises (Information Security)
• Article: How network intrusion prevention devices can -- and can't -- secure your network (Linux Security)
• Article: That network balancing act -- Keeping a clear view (SC Magazine)
• Product & vendor guide: Intrusion Detection/Forensics

• Expert Advice: How many firewall layers does my company need? (SearchEnterpriseLinux.com)
• Expert Advice: Can I really use a Linux server in place of a commercial firewall? (SearchEnterpriseLinux.com)
• Expert Advice: Resources on firewalls (SearchEnterpriseLinux.com)
• Expert Advice: Where can I learn more about setting up a firewall? (SearchNetworking.com)
• How-to: Firewall configuration prerequisites (Jay Beale, Bastille Linux Project)
• Tip: Where to put a firewall when using partitions (Search400.com)
• White Paper: Hardening the TCP/IP stack to SYN attacks (Security Focus)
• White Paper: Firewall Evolution: Deep packet inspection (Security Focus)
• White Paper: Linux firewall-related /proc entries (Security Focus)
• White Paper: Migrating services between firewall technologies (Andrew Barratt -- SANS Institute)
• Article: Building Firewalls with iptables, Part 1 (EarthWeb)
• News: Symantec offers firewall for Linux on the iSeries (Search400.com)
• How-to: Samba Authenticated Gateway HOWTO (LDP How-to Index)
• Article: Secure Installation of Apache Web Server (Linux Exposed)
• Tip: Choose the right firewall topology (SearchNetworking.com)
• IPCop firewall
• How-to: Linux Firewall download and installation (Projectfiles.com)
• Product & vendor guide: Firewall software products
• Product & vendor guide: Firewall services and resellers
• Product & vendor guide: Firewall appliances
• Firewall tips and articles(LinuxSecurity.com)
• Best Web Links: Firewalls

• Wireless apps get more powerful, but security is a concern
• Wireless security: Is WPA good enough?
• VPNs and wireless LANs
• Gateways for secure wireless access
• Linux-PAM (Pluggable Authentication Modules for Linux): A flexible mechanism for authenticating users
• Using PPTP or IPsec VPN tunnels for WLAN security/gateways
• Wireless LAN analyzers: The ultimate hacking tools?
• Diagnosing WLAN errors
• Wireless security overview
• Bolstering wireless LAN security
• Who's watching your wireless network?
• OpenSSH for remote security
• Linux VPN masquerade how-to
• Technology is not the only solution to wireless security
• Wireless Gone Wild: Time to Plan Your WLAN
• Introduction to FreeS/WAN for VPN, remote security
• Get expert advice about remote security. It's easy!

• Network security monitoring -- Going beyond intrusion detection
• Network security monitoring is more than IDS
• Stumbler mapping networks for future attacks
• Penetration testing
• Low-cost security tool: monitoring
• Network monitoring with Dsniff
• Security tools watch behavior to stop new threats
• SpamAssissin mail filter
• Mail Scanner (part of a complete free anti virus and spam proxy solution)
• Security monitoring software products
• Security monitoring services and resellers
• Security monitoring hardware products
• Get expert advice on security monitoring practices and tools for Linux

• How to be a security warrior, part 2
• Security hardening
• How to make security matter
• The real cost of cybersecurity
• Security auditing
• Developing a security awareness, training and education program for users
• Addressing security's people problem
• Building and implementing a successful security policy
• The next big thing: Vulnerability assessment
• Security Enhanced Linux
• SSL certificates how-to
• Linux IP Masquerade HOWTO
• Cisco networking simplified: policy management and security
• Protecting your Web servers: Is your security pukka?
• Tip: Web security benchmarks
• Securing servers: Vendors offer everything from common sense to rocket science
• Ways to open and close ports without a firewall
• Security management basics
• DNS how-to: Basic security options
• The security policy document library: E-mail policy
• Security policy for the real world: Physical security
• More about physical security
• Protecting the data center
• User identity management products

• Featured Topic: Security tool school (SearchEnterpriseLinux.com
• Can't find an answer to your security question? Ask John H. Terpstra
• Best Web Links: Securing Linux (SearchSecurity.com)
• White papers: Enterprise Linux security(SearchEnterpriseLinux.com)

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