UDP Not being transmitted

[Gahhruuba]

Fixed to a point... Had to enable TCP mode... UDP will not accept packets.

I am currently hosting a mumble server on a dedicated server computer on my home network with speeds of 150mbps//50mbps off of a Linux Ubuntu LTS operating system. PORTS ARE OPEN

My current issue is that I cannot talk to people when I login to the Mumble server on the same network with a different computer... All of my stuff is plugged in, when I do the tests inside Mumble everything works fine... Even when I run a Ventrilo server I am able to communicate with people...

What am I doing wrong?!

Can anybody help me?

EDITS:

No UDP Ping.. Ports are Open though

http://i.gyazo.com/e73a4f76b7e5482e0b1c7372cd3ad535.png

http://i.gyazo.com/97cc8382edf672d8eeeba3950e8e8147.png

http://i.imgur.com/NACLjMl.png

Server Firewall:

http://i.gyazo.com/fb335f1cfbaaf4e5cd43456ac93c5637.png