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  • Installing the ModSecurity Web application firewall on Red Hat Enterprise Linux

    Learn how to set up the ModSecurity Web application firewall on Red Hat Enterprise Linux 5.4 and Apache Web server 2.2.x. This firewall monitors access to Web servers to ensure that requests are valid and not malicious. 

  • Patching running Linux kernels on servers with no reboot using Ksplice Uptrack

    Ksplice Uptrack keeps Linux servers up-to-date with recent kernel security patches without rebooting, saving time and reducing down-time for mission critical production servers. Learn how the tool works and hear about a Linux-based hosting provider t... 

  • Getting started with OpenVAS

    OpenVAS is an open source network security scanner, and version 3.0.0 has useful features for your Linux system. Learn how to install and set-up OpenVAS in your data center from source on a Linux server. 

  • 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. 

  • 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... 

  • 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... 

  • 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... 

  • 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... 

  • 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. 

  • 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.