XBOX 360 not connecting to Serviio?

Thanks for reading my question.
I have an Xbox 360 sharing a network with my debian linux machine running Serviio.
The Xbox 360 can see the Serviio share I created in its video player, but cannot seem to "connect" - the connection from the Xbox always times out and spits out the "are you behind a firewall?" text on the xbox. The serviio console has no trouble seeing the Xbox either.
Frustrating is I set this up once before, redid my linux install, and now it no longer works.
Has anyone seen this or have any idea what to do to sort it? Thank you.
I have an Xbox 360 sharing a network with my debian linux machine running Serviio.
The Xbox 360 can see the Serviio share I created in its video player, but cannot seem to "connect" - the connection from the Xbox always times out and spits out the "are you behind a firewall?" text on the xbox. The serviio console has no trouble seeing the Xbox either.
Frustrating is I set this up once before, redid my linux install, and now it no longer works.
Has anyone seen this or have any idea what to do to sort it? Thank you.