Hi Roger,

It is possible, but it can cause performance and throughput issues if you have:

A) a large volume of conferencing traffic accessing the server frequently
B) content filtering enabled on the network - as some common ports (such as 80 and 443) are often filtered heavily which can degrade real-time communications such as video and audio.

You could apply a firewall rule that denies connectivity on some ports e.g. 22, 23, so it will only listen on a designated few (80 and 443)...

Ports 80 and 443 are the minimum and *must* be open. However I'd strongly recommend you leave all Nefsis ports open and accessible (if you can) for the best possible performance.