The left switch and the right switch belong to two network segments. According to your description, the left network segment is 192. 168.0.0, and the right network segment is 192. 168.2.0 (the computer room you mentioned).

Computers with 192. 168.0.0 can access the external network, but not the internal network.

Computers with 192. 168.2.0 can access the internal network, but not the external network. Now, just connect the switch on the right to the router, unplug a network cable or network card from FTP, merge it into any network segment, reset the IP, and then add 192.5438+068.0.0 to 6544.