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Syslog 106016 on Cisco PIX

Posted on 2011-03-10
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Last Modified: 2012-08-13
Hey Guys,

We are receiving a lot of Deny IP Spoof from messages on our PIX

106016 Deny IP spoof from (255.255.255.255) to 100.100.100.102 on interface inside.

The subnet on the inside interface is 192.168.2.0/24 so I’m unsure where to even start with tracking this down. Any help would be greatly appreciated
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Question by:supportemea
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Istvan Kalmar earned 2000 total points
ID: 35095486
Hi,

there is a computer with 100.100.100.102 on your lan.. it sent a broadcast to all computer on the lan...
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by:supportemea
ID: 35095576
Thanks ikalmar, Is there a way of finding which port on our switches this device is plugged into ?

We are using Cisco 3560 and 2960 swtiches
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by:Istvan Kalmar
ID: 35095954
yep you need to ser another pc to 100.100.100.103 and ping the 100.100.100.102 ...
 arp -a tells the mac address of the intruder....
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