Configure firewall to accept WCF requests?

So I get an email from our software vendor giving me details on our software upgrade that reads: “Have Hopkins set their firewall to accept WCF requests only from xxx.xxx.xx.xx:443. The communication will occur via https.” I x’ed out their external ip address of course. 🙂

We run a sonicwall tz210. The way I understand the message, port 443 needs to be opened so the tech can upgrade our software? I can’t find a WCF service in the sonicwall setup. One of their tech support guys is supposed to give me a call, but that could take a day or more and I want to get this figured out before the upgrade which is scheduled for this coming Tuesday.

Any help is appreciated.