New York, NY
Kerberos Kerberos authentication involves a client and a Kerberos key distribution center (KDC). UDP port 88 is the default location for a KDC (server).
Xbox port According to xbox.com, port 88 is one of two ports (3074 TCP/UDP and 88 UDP) that Xbox Live! uses.
It's not necessary to open these, however I forwarded them on my router anyways.
Re: Xbox port Hi I too opened them for Xbox because I could not hear some users
port 88 open I have an Xbox sitting behind a 2Wire 1800 which "understands" xbox traffic and forwards it on.
? stupid question i know, but how do you open ports