I'm a sysadmin at a small state college with limited experience with enterprise firewalls. We have an issue with our eSports team computers and I suspect it may have something to do with uPnP. We have two MX-250s configured for high availability and have no layer 7 rules or content filtering for gaming.   The users report that they are able to connect to various games and game lobbies, but are having issues with multiplayer scenarios that should be displaying other users, but are not. This causes the games to be somewhat unplayable, especially at the competitive level.   This issue is hard to describe because it varies wildly for each user. These computers are hosted in the same VLAN. Are you familiar with these types of problems involving esports and enterprise firewalls? ... View more