In which we learn to analyze power usage and maximize battery life on Linux computers using the new improved PowerTOP.

Sharing Terminal Sessions With Tmux And Screen tmux and GNU Screen are well-known utilities which allow multiplexing of virtual consoles. Using either, it is possible to start a session, detach, move to a different machine and resume the session in uninterrupted progress. It's also possible to use these tools to...

Warning from Microsoft to the entire Internet: make sure that your digital certificates are at least 1024 bits. As of Oct. 9, 2012, longer key lengths are mandatory for all digital encryption certificates that touch Windows systems. Here are some issues to be aware of and tools for querying SSL certificates. 

In this tutorial, we'll write an ISPConfig plugin to log failed logins to syslog, filter those entries using rsyslogd and add a fail2ban rule to block malicious users' IPs.