Jack Wallen offers tips for securing Linux that you can take care of in five minutes or less. SSH is a tool I use every single day to log into remote Linux servers and take care of my admin tasks.

Most IT pros know that using Telnet to manage routers, switches, and firewalls is not exactly a security best practice. Instead, the accepted alternative to Telnet’s lack of security is Secure Shell ...

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Chances are, if you are the owner or administrator of a Linux machine, you access it remotely from time to time, if not constantly. Be it a workstation at home, a co-located server or a hobby machine, ...

If shutting off telnet access and insisting that all system-to-system connections use ssh isn’t enough to toughen your system’s hide, here’s another way to make your servers just a little more ...

Last month, in the first of a two-part series, I described the theory behind the next generation in passive authentication technologies called Single Packet Authorization (SPA). This article gets away ...

If you’re connecting to servers over the secure shell (SSH) protocol using an OpenSSH client, you should update it immediately. The latest version patches a flaw that could allow rogue or compromised ...

I've been using Secure Shell (SSH) for decades. With this remote login tool, I can rest assured my remote machines accept logins securely and efficiently. At the same time, I also understand nothing ...