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From: David Jarvie on 15 Mar 2005 07:20
Evey time I boot up (Sarge), I get a list of messages dropped by my firewall.
They are all for IP address 224.0.0.251, on UDP port 5353. It looks like
these transmissions are being generated by mDNSResponder. I can't find
anything more than a very cryptic description of what this program is for,
but it looks as if it might be designed to run on server machines rather than
desktops. Can anybody explain its purpose, so that I can decide if I actually
need it?

Cheers,
David.


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From: Justin Guerin on 15 Mar 2005 18:40
On Tuesday 15 March 2005 04:54, David Jarvie wrote:
> Evey time I boot up (Sarge), I get a list of messages dropped by my
> firewall. They are all for IP address 224.0.0.251, on UDP port 5353. It
> looks like these transmissions are being generated by mDNSResponder. I
> can't find anything more than a very cryptic description of what this
> program is for, but it looks as if it might be designed to run on server
> machines rather than desktops. Can anybody explain its purpose, so that I
> can decide if I actually need it?
>
> Cheers,
> David.

This service comes from the package of the same name:
$ apt-cache show mdnsresponder
Package: mdnsresponder
Priority: optional
Section: net
Installed-Size: 220
Maintainer: Jeff Waugh <jdub(a)perkypants.org>
Architecture: i386
Source: howl
Version: 0.9.8-2
Depends: libc6 (>= 2.3.2.ds1-4)
Filename: pool/main/h/howl/mdnsresponder_0.9.8-2_i386.deb
Size: 72230
MD5sum: 590b5b900ef708aa6eca5ccd306200d8
Description: Howl Rendezvous/mDNS service responder daemon
This daemon services multicast DNS service discovery ("Rendezvous")
requests.

If you want to know more about Rendezvous, check out
http://developer.apple.com/darwin/projects/rendezvous/

Hope that helps,
Justin Guerin


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