Video Calls Between VPN Users

[goulin1]

Hi,

I was having some issues with Microsoft Office Communicator when connected on a VPN via a Cisco ASA. When 2 users try to start a voice or video session, the other user just sees a black screen. However, it works between user to user on the inside, and between an inside user and a VPN user on the outside. The following logs come up, which are a bit strange because it seems as though the connection is made between the users, but no data is sent:

6|Jan 15 2007 11:17:55|302016: Teardown UDP connection 144885 for outside:172.20.9.8/25926 to outside:172.20.9.9/9100 duration 0:00:00 bytes 0 (john)
6|Jan 15 2007 11:17:55|302016: Teardown UDP connection 144886 for outside:172.20.9.8/55628 to outside:172.20.9.9/39668 duration 0:00:00 bytes 0 (john)

Any ideas?

Cheers

 

[goulin1]

I forgot to mention, that I also tried the 'fixup protocol sip' command, but that actually stopped Microsoft Office Communicator working all together (i.e. from even logging into the server).

 

[Supergrrover]

Do you have
same?security?traffic permit intra?interface
in the config?
It could also be an ACL issue.



Brent
Systems Engineer / Consultant
CCNP, CCSP

 

[goulin1]

Ahhh, thanks for that - I hadn't permitted the intra interface communication. I assume this only applies to VPN users as per the description?

 

[Supergrrover]

It's for traffic that has to come in and then go out the same interface. Previously (6x code) it wasn't allowed for security reasons I presume.


Brent
Systems Engineer / Consultant
CCNP, CCSP