I have two linux computers in two different institutes. Computer1 is username1 with host1(internal ip 192.168.1.115) connected to server1(public ip 220.127.116.11). Second Computer2 is username2 with host2(internal ip 192.168.1.120) connected to server2(public ip 18.104.22.168 ). I want to connect to Computer2 from Computer1 using ssh. Please tell me, How can I do?