Re: Odd addresses on my wireless network

["Michael T. Babcock" <mike () triplepc com>]

Ron wrote:

> Windows computers, and some routers, have an obsession with sending 
> traffic to "239.255.255.253" for something to do with upnp 
> connectivity.  I didn't even realize this was happening until I set up 
> Snort on my Linux box, and discovered packets destined for that 
> (unroutable) address every second or so.  If either of your routers 
> had upnp enabled, and you don't know what that is or don't use it, 
> then I would recommend disabling it.

First off, those address ranges are primarily multicast ranges and 
therefore perfectly routable, if your routers / network support it (and 
they probably do).

239.255.255.253 is the service location protocol address, 224.0.1.22 is 
SLGM and 224.0.1.35 is DADM.

For a short reference, I found 
http://www.networksorcery.com/enp/protocol/slp.htm on Google for you.

I recommend a search of "239.255.255.253 multicast"

--
Michael T. Babcock
Triple PC Ltd.