Nov 11, 2018, 4:08 AM

It's seems odd to argue over how mu access from a corporate environment would be allowed but every commercial firewall I can think of is deny by default for traffic. unless some enterprising system admin decided to put in a rule to allow everything (which absolutely does happen, but that's for the RL things I love for people me employeed) they would have to punch holes specifically for the ports that MUs use. Port 80 and 443 are virtually always allowed through, sometimes limited through a proxy and/or web filtering, but unless you're a company with strictly no outside web access those will be allowed.

And again the example of a hotel. A few big chains only allow 80, 443, IPSec ports and a few other protocols to transverse their guest networks.