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ASA5510 Error Message

%ASA-1-106021: Deny UDP reverse path check from 169.254.213.25 to 169.254.255.255 on interface Networkmgmt

I am wondering if anyone has any information for me beyond what the explanation that Cisco provides. I am sure this is an inside attack, as my outer layers have not picked up this IP. I am looking for a good way to track down what machine this IP belongs to.

Any info would help.

Thanks,

Adam Filkins

1 REPLY
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Re: ASA5510 Error Message

You were probably looking for the security->firewall forum, you somehow ended up in the Wireless security forums. However, at a glance that address is an automatic private IP address. All that that means is that a client failed to get a DHCP address, and is trying work around it. A good description is at:

http://compnetworking.about.com/cs/protocolsdhcp/g/bldef_apipa.htm

The error you got is because the firewall knows that APIPA addresses are not valid on it's interface. I would not be concerned about this for security reasons, but you may need to figure out what client is not working.

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