So I've gotten onto the Moon, and wish to join a fireteam with my friend. Both of us have Moderate NAT, yet are unable to connect each other's fireteam. Living in University accommodation there's limited I can do (however every other game under the sun works, and I can join Destiny and see chat just fine, so why can't I join fireteams)., however I've already ensured that the ports are open for Destiny to use. Are there any modern/up to date/reliable guides to find out more/fix this issue? People seen to be joining my lobby just fine as well.