Secure Networking with OpenSSH

OpenSSH is an open-source implementation of the secure shell protocol that comes with almost every major Linux distribution. You can run out to www.openssh.org to get the latest and greatest, but you probably already have it on your system. That said, keeping up to date with the latest version of OpenSSH is essential if you want to maintain security. So, if your version of OpenSSH is more than a few months old, you may want to consider checking for an update.