Re: daap/mdns multicast problems

2007-10-23 Thread Christian Weisgerber 
Jonathan Kent [EMAIL PROTECTED] wrote:

 Been trying in vain to get daap/mdns traffic through my OpenBSD 4.1
 firewall to talk to my mt-daap server.
 
 From tcpdumping I can see the multicast traffic coming into sis1
 interface but not coming out of the sis0 interface so I can only assume
 that I have missed something.

As Brian already pointed out, you need to enable multicast routing.
You also need a multicast routing daemon to perform the actual
forwarding.  mrouted(8) will do for simple purposes.  I haven't
tried dvmrpd(8).

However, the first thing you want to check is the TTL of these mdns
packets.  I suspect it's 1 and they are intended as local broadcasts,
not as routable traffic.

-- 
Christian naddy Weisgerber  [EMAIL PROTECTED]

daap/mdns multicast problems

2007-10-19 Thread Jonathan Kent 
Hi,

Been trying in vain to get daap/mdns traffic through my OpenBSD 4.1
firewall to talk to my mt-daap server.

From tcpdumping I can see the multicast traffic coming into sis1
interface but not coming out of the sis0 interface so I can only assume
that I have missed something.

At present I don't block out traffic (sis0) just in (sis1) on pf and
have the following simple (at present) rule to allow this traffic in:

pass in quick proto { tcp, udp } from any to 224.0.0.251 port 5353 keep
state label mdns

I'm pretty certain its not pf getting in the way so my guess here is
that I need multicast routing enabled??  Been googling for info on this
to see if that was the case but can't find much on this of help.  Of
course I could be completely off here :o)

Any pointers greatly received.

Thanks

Jon