If you're asking about ports, then 80 and 443. 80 for non-encrypted and 443 for encrypted connections. I cannot answer about binaries since I'm not sure what your firewall / security software might block. So, open up 443 since you're unlikely to use unencrypted connections and test it from an outside connection. You can try connecting using the iOS or Android app from a mobile device while you're in the office if that's easier.