I have a Sony KDL 40ex40B and a NAS Synology DS409slim.

I have activitated DLNA on the NAS but my TV cannot find the server.

Internet works fine on the TV and on my router WAN setup I can see both the NAS and the TV.

Is there a compatibility problem between Synology NAS and Sony Bravia?

Or do I need to do something with the router, e.g an internal firewall blocking?