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wireshark log analysis icmp problem

Posted on 2008-10-13
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Last Modified: 2013-11-29
In my asa firewall I get a ton of icmp traffic on a ip address internal that is not on my network  Looks like spoofing or something   but i get a ton of icmp traffic out to different web sites on same subnets... any ideas see picture
packet-picture.JPG
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Question by:ckness
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4 Comments
 
LVL 12

Expert Comment

by:Pugglewuggle
ID: 22708858
Something is wrong with the PC 192.168.1.50
192.169.45.x is the Windows IPv4 link failure loopback address - it is selected randomly when a cable is connected to a NIC but it isn't functioning as it should or isn't getting an IP via DHCP.
Check that out.
I seriously doubt this is an attack - just a malfunction on 192.168.1.50.
Cheers!
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Author Comment

by:ckness
ID: 22710542
great answer problem is there is no pc on my network in that subnet nor is it routable so i can not trace route it,  whats the best way to determine where it is.  Also if its a loop back why does it go out to the internet to resolve ping,,,,
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LVL 12

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Pugglewuggle earned 500 total points
ID: 22710567
That's what I was wondering too... Like i said though, if a PC is malfunctioning there's no telling what it will do.
How many machines are we dealing with?
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Author Closing Comment

by:ckness
ID: 31505759
turned out to be a phone system behind a router that i was not routing for on lan/wan but allowed them to get internet..... took the gateway off machine took away traffic...
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