ssh

• SSH with algorithms:

ssh john@X.X.X.X \

-o KexAlgorithms=diffie-hellman-group14-sha1 -oHostKeyAlgorithms=+ssh-dss

• Check if SSH service is running:

sudo ss -antlp | grep sshd

• SCP on another port:

scp -o "UserKnownHostsFile=/dev/null" -o "StrictHostKeyChecking=no" \

-P 1337 john@X.X.X.X:/etc/passwd .

• Local port forwarding:

ssh -N -L bind_address:port:host:hostport username@address

• Dynamic port forwarding:

ssh -N -D address_to_bind_to:port_to_bind_to username@X.X.X.X