OpenSUSE multicast not working?

Question

I'm trying to do multicast dns on OpenSuSE through a trusted java applet<->, and my attempts to find anything on the network are silently blocked! What could be the problem?

Answer 1

OpenSUSE won't tell you during installation, but it enabled a firewall by default that will block multicast operations. You will have to disable the two firewall services to get multicast working properly, namely

SuSEfirewall2_setup

and

SuSEfirewall2_init