[avahi] avahi-daemon stops working after undetermined period of time

[Lennart Poettering]

On Tue, 23.12.08 14:32, Brian McKee (map at map-heb.com) wrote:

> On 23-Dec-08, at 2:24 PM, Brian McKee wrote:
>
>>
>> On 23-Dec-08, at 1:53 PM, Lennart Poettering wrote:
>>> If Avahi services only show up initially but then go away this sounds
>>> a lot as if you'd have some kind of firewall running or some hardware
>>> issue that disallows mDNS multicast packets (udp port 5353) to be
>>> received by your computer but allows them to be sent.
>>
>> Ah - ok - that gives me something to chew on.  I'll report back.
>
> Yep - I bet that was it - I haven't left it running long enough to prove 
> for sure, but the firewall wasn't opened correctly.  Thought I'd done 
> that earlier :-(
>
> Do I need the entire 224.0.0.0/4 open?  or can I tighten that down a  
> bit?  Just 224.0.0.251 didn't seem to be enough.

You need to allow mDNS traffic to port 5353 coming from any host on
the LAN and going to any host on the local LAN or going to the mDNS
group 224.0.0.251.

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
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