SSH

SSH stands for Secure Shell. The SSH protocol is used to connect securely to remote computers over a network.

This protocol requires you have account credentials already configured on the remote device. In some instances, you may also need an SSH key, which uses key-based authentication instead of a simple password. Depending on the device, password authentication may be disabled by system administrators making it necessary to have an SSH key to access a machine.

These commands work for all Unix-based terminals as well as Windows PowerShell.

Using SSH

If you have an account on the remote machine, you can use the following command to initiate a new SSH session. Be sure to replace username and [hostname-or-ip] accordingly.

SSH Options

The ssh program can be run with additional parameters:

• -p [port] allows you to specify a specific port to use for the SSH connection. This MUST match the port that the remote device is listening for ssh connections on.
• -6 forces a connection using IPv6. If you are connecting using a hostname, and want to make sure the IPv6 address is used for the connection, you can use this flag.

See SSH Keys for instructions on copying SSH keys to the remote machine.