ssh

Secure Shell is a protocol used to securely log onto remote systems. It can be used for logging or executing commands on a remote server. More information: https://man.openbsd.org/ssh.

• Connect to a remote server:

ssh username@remote_host

• Connect to a remote server with a specific identity (private key):

ssh -i path/to/key_file username@remote_host

• Connect to a remote server using a specific port:

ssh username@remote_host -p 2222

• Run a command on a remote server with a tty allocation allowing interaction with the remote command:

ssh username@remote_host -t command command_arguments

• SSH tunneling: [D]ynamic port forwarding (SOCKS proxy on localhost:1080):

ssh -D 1080 username@remote_host

• SSH tunneling: Forward a specific port (localhost:9999 to example.org:80) along with disabling pseudo-[T]ty allocation and executio[N] of remote commands:

ssh -L 9999:example.org:80 -N -T username@remote_host

• SSH Jumping: Connect through a jumphost to a remote server (Multiple jump hops may be specified separated by comma characters):

ssh -J username@jump_host username@remote_host

• Close a hanged session:

<Enter> ~ .