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  • Using BackTrack to check for Linux vulnerabilities

    Through common security methodologies and a full array of security testing tools, BackTrack identifies and exposes flaws within your Linux systems.  Tip

  • An open source security language: What is OVAL?

    OVAL is a standardized security langauge that will help IT security professionals determine security vulnerabilities in a consistent manner across systems. With a unified language, a definition can be written by the maintainers and by using an assesm...  Tip

  • Using OpenSSH for secure network tunnels on Linux

    SSH is secure enough to be used across nonsecure private and public Internets. Learn the basics of SSH execution and how to implement and optimize SSH tunnels with Linux. SSH tunneling features allow remote traffic to be sent through the tunnel, expa...  Tip

  • When to use SELinux: An introduction to security-enhanced Linux

    Confused about security-enhanced Linux (SELinux)? Find out what it is and how and where to implement this Linux security system. Ken Milberg explains its origins and provides some good advice for implementing the system in your Linux distribution inc...  Tip

  • Linux open source firewall software options

    Ken Milberg overviews open source firewall software options for Linux that leverage netfilter/iptables. FireHol, Shorewall, Untangle, and FireStarter are examined. Ken advises carefully considering these options, demoing them, and determining which o...  Tip

  • Compiling OpenSSH on Ubuntu 7.04 Feisty Fawn Server

    Find out how to compile OpenSSH on the latest version of Ubuntu, Ubuntu 7.04 Feisty Fawn Server, to get safely connected to your remote servers.  Tip

  • Security information management: OSSIM

    Get an enterprise-wide view of the state of security with OSSIM, Open Source Security Information Management, a monitoring package of integrated open source tools.  Tip

  • Bastille Linux: Introduction and installation

    Bastille Linux is an automated security tool, ideal for cross-platform environments. Get started here with an introduction and instructions for installation.  Tip

  • SUSE security: Forgotten passwords, AppArmor

    A security expert describes how to harden your openSUSE 10.2 installation and talks about open source security tools.  Tip

  • How to smack IT intruders with MACs

    Give the boot to unauthorized users with this how-to on mandatory access controls (MACs). Find out how to use MACs to establish security levels, create secure hash keys and control underlying binary code.  Tip

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