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  • Creating an inventory with nmap network scanning

    Nmap network scanning generates a full system inventory, but it's only usable with the right parameters and output format. Learn how to create an nmap inventory in this tip. 

  • Kerberos authentication in RHEL: Easing Windows-Linux integration

    Kerberos authentication for CIFS offers easier Windows-Linux integration. In this tip, learn how Kerberos authentication works and how to set it up in Red Hat Enterprise Linux. 

  • 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. 

  • Guide to the Linux security toolbox

    Linux security software and tools are always changing. Learn which ones to use for your open source system and how to configure them according to your needs in this newly updated guide. 

  • 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... 

  • What do you know about Linux administration tools?

    How well do you know Linux tools? Test your understanding of tools for application servers, networking, scripting, Mozilla, security, management and administration, and desktops. 

  • 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...