Connecting to a Zeroconfig/Avahi printer

[Reindl Harald]

Am 15.05.2012 16:24, schrieb Steven Stern:
> On 05/15/2012 08:57 AM, Paul W. Frields wrote:
>> On Mon, May 14, 2012 at 11:25:47PM +0200, Reindl Harald wrote:
>>>
>>>
>>> Am 14.05.2012 23:22, schrieb Steven Stern:
>>>> I have a really nice HP printer that's currently connected via USB cable
>>>> to this system.  I need to move it out of cable range.  My OS/X and iOS
>>>> devices are able to find it and print to it using the magic of Bonjour.
>>>>  Is there a way for Fedora to use it via Avahi, rather than ipp and
>>>> giving the printer a fixed IP address?
>>>
>>>
>>> http://localhost:631/
>>>
>>> CUPS does find network-printers via avahi
>>
>> Ensure that your Fedora client system's firewall has port 5353/udp
>> (mDNS) and 631/udp (IPP client) open, and things should generally Just
>> Work(tm).
>>
> 
> It seems to be more than 5353 and 631.  With the iptables service
> running, I don't see the printer in CUPS. If I stop the iptables
> service, I do.  What's missing here?
> 

it is only 5353 used BUT UDP, 100% sure and no there is no need
to open jetdirect INCOMING or other voodo

avahi works on UDP and your UDP rule looks strange
what is the "224.0.0.251" for?

you need open ports FROM YOU LOCAL NETWORK like 10.0.0.0/24
your other rules looking partly dangerous and way too wide open

> ACCEPT     tcp  --  anywhere             anywhere             state NEW
> tcp dpt:mdns
>
> ACCEPT     udp  --  anywhere             224.0.0.251          state NEW
> udp dpt:mdns

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