The Secure Shell — SSH — allows you to send secure, encrypted, communications between computers that is nearly impossible to crack. Here's how to use it in macOS.

PuTTY, a free and open-source telnet and SSH client, supports setting the acceptable authentication methods per connection and can be saved for future use.

How to generate SSH (Secure Shell) keys in Mac OS X using the Terminal app and Command Line.

* If using PuTTY the public key is shown in the window and not in a separate file. See step 4 of "Generating SSH keys with PuTTY" above. That will be the key needed for your cut and paste. ↩ Back ...

If i just use a private key sitting in the client's ~/.ssh folder, it's practically a plaintext password sitting on my drive, with a short list of possible targets in the known_hosts file. This ...

We'll use SSH to create a pair of secured network tunnels that we can use to send and receive our unencrypted email. You might be able to create just one tunnel for retrieving email, but some ...