Problem:

• Only single Ethernet jack in the Lab.
• Use the router (cisco brand) for ethernet connectio.
• Need to access the server or the desktop remotely through SSH.

Here we consider the solution of Port Forwarding (端口映射).

Assuming the connection medium: Laptop => Router => Server. The default port used is 22 if not specified.

1. Choose single port forwarding.
2. Map the internal port 22 of server (e.g., 192.168.1.X) to a external port (777 for example)
3. Perform the ssh access as:

$ ssh elliot@{Public-IP} -p 777

Some useful links:

• 设置路由器 从外网访问内网服务器 端口映射