Networking Knowledge Base

SSH Port Forwarding

Host Machine

• Make sure SSH server (openssh-server) has been installed and is running on host machine.
• Get the host machine's private IP address.
• Get the host machine's public IP address.
• Configure router to forward ssh requests to port 22 on host machine's private IP address.

Client Machine

• Configure client machine for passwordless login:
  • Add entry for host machine to ~/.ssh/config file (public IP address of host machine, user name).
  • Check for existing ssh key (ls -al ~/.ssh/id_*.pub) and create one if none exists (ssh-keygen -t rsa -b 4096).
  • Copy public key over (ssh-copy-id remote_username@server_ip_address).