Gateway configuration: create a file at ~/.ssh/config

config

# Use this command to avoid the password prompt
# First generate an SSH key pair with: ssh-keygen
# Second, run this command on your system
# ssh-copy-id YOUR_GATEWAY_USER@gateway.computing.dcu.ie

# To open server's tensorboard from my computer
# ssh myserver -L 6006:127.0.0.1:6006
# Note that 'myserver' is the alias I use to connect to my server (see below)

# Acces to my server using the gateway using an alias:

Host myserver
    HostName MY_IP
    User YOUR_SERVER_USER
    Port 22
    ProxyCommand ssh -q -x YOUR_GATEWAY_USER@gateway.computing.dcu.ie -W %h:22

# Now you can directly connect to the server by typing 'ssh myserver'
# Note that the port might not be the 22