Spam over Internet Telephony (SPIT) is regarded as the next generation of spam. In this article, we investigate SPIT and point out countermeasures for admins with VoIP servers.
Knoppix boots from the DVD drive and comes with a collection of powerful troubleshooting tools. Knoppix creator Klaus Knopper counts down his favorite rescue utilities.
What used to be the domain of expensive storage solutions is now available on a tight budget with the free OpenSolaris operating system and Comstar. You can set up your own storage system that supports both iSCSI and Fibre Channel.
SELinux can provide protection from exploits that could compromise your system – if you know how to set it up and use it. We show you how to solve some commonly encountered problems.
For companies that provide hosting and email packages to clients to administer a myriad of tasks, WHM and cPanel provide a web-based graphical control panel designed to help.
Providing the necessary IT services to your employees or customers is more than simply logging tickets and keeping track of hardware. We compare several ITIL-compliant help desk packages.
High-availability clusters have become an important part of the system administration landscape. Tools like KVM bring the benefits of virtualization to HA clustering environments.
Secure your enterprise, monitor system performance, and more by harnessing the power of Splunk to search, monitor, report, and analyze events and data from any source.
You might want to reap the benefits of Active Directory's single sign-on for your virus scanning and content filtering. If you also use Squid to handle user access to the Internet, you have a front-row seat for "When worlds collide."
Conventional VoIP telephony doesn't provide for the complications of a firewall. The STUN protocol is the standard fix, but sometimes STUN just isn't enough.
You need to lock doors to keep criminals out. Intelligent tools such as port and security scanners reveal potential vulnerabilities and help you keep the computers on your network safe from attackers.
Email archiving involves more than just backing up your email directories. It is also a question of classifying the email and making it easier for users to find their way around overfilled email folders.
Linux and OpenSolaris have a number of differences. For example, OpenSolaris uses a version of the legacy System V Init to start and stop system services automatically.
Software appliances provide a convenient means for packaging, transporting, and deploying software without the need for complex, repetitive configuration steps.
