LAN side of Surf SOHO has port 8183 open. why?

[hcg]

See

NMAP Scan - ProRemote?

I just ran the following nmap scan: nmap -v -A -p 1-65535 and found two open ports. The first was the port I assigned for admin in lieu of 443. The second was “open port 8183/tcp”, which appears to have something to do with something called ProRemote. I have not enabled remote administration. Should either the admin port or 8183 be open? Should I close it/them? If so, how do I close it/them? Thanks.