RE: rogue IP address
From: Fields, James (James.Fields_at_bcbsfl.com)
Date: 05/01/03
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To: "'dondon@pacbell.net'" <dondon@pacbell.net>, security-basics@securityfocus.com Date: Thu, 1 May 2003 14:20:43 -0400
Sorry if this seems like a dumb question, but you mentioned a "port to IP"
table in your switch. Does your switch have a "port to MAC address table"?
Or is that what you actually were referring to?
If it has that, you can look at the ARP cache in the router for that segment
and find the MAC associated with the IP address. Then you can compare the
MAC to the table in the switch to find the port.
-----Original Message-----
From: dondon@pacbell.net [mailto:dondon@pacbell.net]
Sent: Wednesday, April 30, 2003 6:40 PM
To: security-basics@securityfocus.com
Subject: rogue IP address
Someone on our network assigned an IP address to their own system without
my knowledge. Using LANguard network scanner, the best I can tell is that
it's a Linux box. The port-to-IP mapping table on our Asante switch
doesn't see to work correctly.
Any suggestions on tracing down that system that is associated with the IP
is appreciated!
Andy
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recognized corporate security certification track, provides a comprehensive
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of pertinent security tools. For a limited time you can enter for a chance
to win one of the latest technological innovations, the SEGWAY HT.
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- Maybe in reply to: dondon_at_pacbell.net: "rogue IP address"
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