If you connect to remote computers over the Internet, it is a pretty good chance you use some form of SSH or secure shell. On Linux or Unix you’ll use the ssh command. Same goes for Linux-like ...

OpenBSD has recently stressed to us the value of key rotation by their use of “Signify” distribution release signatures. We have realized that SSH keys should also rotate, to reduce the risk of ...

SSH is the descendant of rsh and rlogin, which are non-encrypted programs for remote shell logins. Rsh and rlogin, like telnet, have a long lineage but now are outdated and insecure. However, these ...

hey all, I need to set up a shell script that ssh's into a remote server then runs some commands. I have minimal control over the remote server, and only slightly more control over the server the ...

In a typical work week, a Unix systems administrator is likely to have at least one small mystery to solve — one “huh?”, one “that doesn’t make any sense” or one “I’ve never seen this before”. Most of ...

If you don't love the shell you're using on your Linux system, change it! There are plenty, including bash, fish, ksh, tcsh, zsh. There are quite a few shells on Linux system and more that can be ...

Having an SSH or Secure SHell to tunnel your traffic through is something we have talked about many times at Null Byte. As we know, it allows us to securely route and encrypt our traffic through a ...