Re: UDP 1434 - worm spoofing or not?

On Sat, 25 Jan 2003, jai wrote:

> Hi,
>
>  Internet traffic of  INDIA's and ASIA's network has been effected
> badly.....its amazing....seriously microsoft sucks..
>  but its fun !! :-)
>
> Well i found something new in this ... i think this worm spoofs IP address
> according ....below is the
> tcpdump output ..out which the host is ....169.254.198.47. sending repeated
> packets to different network...

 Hold on a second here.

 According to the specification for DHCP (I think - can anyone
 quote chapter and verse, and/or RFC?), 169.254.0.0/16 is reserved
 for DHCP clients that don't get a lease.

 Is it possible that this is not deliberate spoofing per se,
 but a DHCP-enabled  infected machine that someone plugged into
 your non-DHCP network? Since the traffic is UDP, it wouldn't
 necessarily matter that it's spoofed for the purposes of worm
 propagation.

 Has everybody got their egress filtering working ? :)

                                Glenn Forbes Fleming Larratt
                                Rice University Network Management
                                glratt@xxxxxxxx



-------------------------------------------------------
This SF.NET email is sponsored by:
SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See!
http://www.vasoftware.com
_______________________________________________
Snort-users mailing list
Snort-users@xxxxxxxxxxxxxxxxxxxxx
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users