August Connect required ports or static IP

I have the August Connect and a outbound (egress) ports blocked (except for the usual 80, 443, 25, 53 and so on) along with web filtering (Sophos UTM9 Firewall). The Connect wouldn't join my network. As a test, I disabled outbound web filtering AND opened up ALL outbound connections for that subnet (DMZ) and it connected and set itself up just fine.

So, my question is two fold. Well, actually one would be a question and the other would be a feature request (I guess). Does anyone know what ports the Connect uses to talk to the mother ship? Looks like I'll either have to make a rule or adjust the web filter. But, since I can't set a static IP on the connect, i really can't pin the rule to an IP.

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Anyone know what ports this device requires outbound?