Log files. They're there for a reason -- to keep track of what goes on behind the velvet curtain of your operating system. When things go wrong, entries are added to those log files, so you can view ...

Log rotation, a normal thing on Linux systems, keeps any particular log file from becoming too large, yet ensures that sufficient details on system activities are still available for proper system ...

Linux systems maintain quite a collection of log files, many of which you are probably rarely tempted to view. Some of these log files are quite valuable, though, and options for exploring them might ...

Firewalls are computers dedicated to filtering particular kinds of network traffic between two networks. They are usually employed to protect a LAN from the rest of the Internet. Securing every box on ...

If your organization manages Linux, AIX, HP-UX or Solaris servers in-house, chances are your system administrators at least occasionally need low-level access to those devices. Typically, ...