Forefront TMG and Itunes blocked

[jembayliss]

I can't get ITunes to sync through Forefront TMG with Websense 7.6 filter. I keep getting the following denied connection in forefront…

 

Denied Connection 30/08/2012 11:21:01

Log type: Firewall service

Status: An ingoing packet was dropped because its destination address does not exist on the system, and no appropriate forwarding interface exists.

Rule: None - see Result Code

Source: Internal (10.0.1.40:5353)

Destination: External (224.0.0.251:5353)

Protocol: mac

Additional information

1. Number of bytes sent: 0 Number of bytes received: 0

2. Processing time: 0ms Original Client IP: 10.0.1.40

 

 

The problems are…

1) I’m not even sure what the message is telling me?

2) I’m not sure it is even a Forefront TMG problem if I set up a new user in active directory in a folder without any group policies applied to the user account it works fines. And I can add the new user into any security groups.

3) If I URL query all of the different URLs that ITunes uses they are all permitted.

 

I’m out of ideas on what to try…. I’m sort of going along with it being a folder redirection something or other type thingy problem at the moment! If anybody has any suggestions or better yet, fix this problem, you will be amazing for ever!!

 

Thanks

 

Jem

[DMcCoy]

Destination: External (224.0.0.251:5353)

 

That's just multicast for Bonjour, blocking it won't be an issue as it's only for the sharing feature.

[jembayliss]

That sloves that then. I was barking up the wrong tree.

Just incase anybody else has this problem I deleted the group policy that was applied to domain members and re-created a new one with all the same settings and it works fine now... Corruption, Dodgy active directory Syncing? Who knows? And to be fare it works now so who cares...

Thanks