SSH

Install

Command: sudo apt-get install openssh-server

1) Check that port 22 and 67890 (SSH) is open on your server and on the router (port forwarding both ports).

2) Check that the SSH server is running on your server

Access Server internal via PUTTY

3) Open port 22 and 67890: sudo ufw allow 22

sudo ufw allow 67890

Access External