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Re: Tracking down IP's



On Sun, Dec 31, 2000 at 03:36:13PM -0500, Bob Bernstein wrote:
> On Sun, Dec 31, 2000 at 12:16:59PM -0700, JD Kitch wrote:
> 
> > Dec 31 11:06:47 tower kernel: Packet log: output REJECT eth0 PROTO=17 xx.xx.xxx.xx:61662 172.16.72.113:161 L=106 S=0x00 I=7632 F=0x0000 T=127 (#43)
> 
> I don't know what tool generated this log entry. This is a situation where a
> good IDS such as snort would shed a lot of light. For example, grepping a
> set of snort rules for that port yields:

While I agree snort is a good tool, I fail to see why the poster
blanked out the source address but left the dest address.  Therefore
all speculation about "where" this packet came from is a bit
premature.

> What I gather is that this could be a student at isi.edu, which is
> apparently part of the Univ. of California, trying his or her hand at
> configuring an NT box in some weird way. Who knows?

Come ON people, 172.16.0.0/12 is part of RFC 1918 Private Network
Addresses.  Also, in this case it's the poster's IP address (must be
using NAT somewhere along the way).

My (worthless) guess:  the provider just got a new HP Openview box and
it's doing autodiscovery on the network.

Cheers,

-- 
Nathan Norman - Staff Engineer | A good plan today is better
Micromuse Inc.                 | than a perfect plan tomorrow.
mailto:nnorman@micromuse.com   |   -- Patton

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