shay7 Posted October 11, 2007 Share Posted October 11, 2007 A while ago I switched to Server 2003 so I could get my IIS 6 mojo on, and I was quite annoyed when I was interrupted every 5 minutes by my firewall informing me that applications were trying to broadcast to 224.0.0.22. I'd never seen this before so I assumed it was one of the quirks of Server 2003. Today I'm back on XP, and guess what. Windows Log On Screensaver is trying to broadcast to 224.0.0.22. Hell, even the disk defragmenter was trying. Why would any app, especially these ones try to do this? If the answer can be found in 'Networking for Dummies' then that's cool, because I've got it in PDF. I tried Google but only found questions and no answers. Link to comment Share on other sites More sharing options...
Sgathan Posted October 11, 2007 Share Posted October 11, 2007 I've seen that quite a few times. Apparently it's some internal call that the firewall is picking up. Do you use Comodo? Link to comment Share on other sites More sharing options...
shay7 Posted October 11, 2007 Author Share Posted October 11, 2007 No, Sygate. Link to comment Share on other sites More sharing options...
+BudMan MVC Posted October 12, 2007 MVC Share Posted October 12, 2007 244.0.0.22 is the IGMP multicast address.. Your firewall should not be complaining about this.. Perfect example of where a software firewall can just confuse the user ;) http://www.networksorcery.com/enp/protocol/igmp.htm http://en.wikipedia.org/wiki/Internet_Grou...gement_Protocol http://www.ietf.org/rfc/rfc3376.txt Internet Group Management Protocol, Version 3 1. Introduction The Internet Group Management Protocol (IGMP) is used by IPv4 systems (hosts and routers) to report their IP multicast group memberships to any neighboring multicast routers. Note that an IP multicast router may itself be a member of one or more multicast groups, in which case it performs both the "multicast router part" of the protocol (to collect the membership information needed by its multicast routing protocol) and the "group member part" of the protocol (to inform itself and other, neighboring multicast routers of its memberships). IGMP is also used for other IP multicast management functions, using message types other than those used for group membership reporting. This document specifies only the group membership reporting functions and messages. If your worried/curious about it -- then just fire up a sniffer an actually look at what your machine is putting on the wire. Link to comment Share on other sites More sharing options...
shay7 Posted October 12, 2007 Author Share Posted October 12, 2007 Thanks :) Link to comment Share on other sites More sharing options...
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