ASA Error

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May 1st, 2009
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I have some lan-to-lan vpn users connected to the ASA who work from home (remote end is a Cisco 871 router). While monitoring one of the connections, I keep noticing this error msg:


ESP request discarded from x.x.x.x to Outside:x.x.x.x


Their IPSec connection works but I am just curious as to why this error msg is showing up and if it is something I need to fix.

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bwalchez Thu, 05/07/2009 - 13:18
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Explanation - This message appears when the Cisco ASA does not have an IP server that services the IP protocol request; for example, the Cisco ASA receives IP packets that are not TCP or UDP, and the Cisco ASA cannot service the request. Recommended Action - In networks that heavily utilize broadcasting services such as DHCP,RIP or NetBios, the frequency of this message can be high. If this message appears in excessive numbers, it may indicate an attack. Upgrading your ASA to 7.1(2) version resolves the issue.

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