How in Zeroshell open port on local network ETH0? eg. TCP 554. I’m using a local area network software, NetSupport School and unfortunately if traffic is by Zeroshell server that does not have contact with the clients computers. if I change the router to another, eg. a d-link can easily make a link. Zeroshell blocking traffic on the local network. How I can unlock local ports or how to open all traffic between computers on a local network ETH0?