upnp multicast and iptables

[Tanguy Eric]

I configure a A/V upnp server (ushare) and i try to load a video from
vlc using its upnp client on the same system. If the firewall is disable
all work fine. If i enable the firewall the upnp client see nothing. 
The upnp server is working on port 49152 and i add this in iptables
using the gui: 
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 49152
-j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 49152
-j ACCEPT
but i still see nothing on the upnp client.
What i need to add in iptables to see the upnp share in the upnp
client ?

Thanks

Eric