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.

• 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 [t]ty allocation allowing interaction with the remote command:

ssh {username}@{remote_host} -t {command} {command_arguments}

• SSH tunneling: Dynamic 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}

• Agent forwarding: Forward the authentication information to the remote machine (see `man ssh_config` for available options):

ssh -A {username}@{remote_host}

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