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Shunning attempts to break into a VPN account on a ASA5510

From some testing on the 5510 it appears that the following events are tripped when authentication fails for an AnyConnect or SSL clientless session.

716039     Group <GroupPolicy> User <asdf> IP <source ip address> Authentication: rejected, Session Type: SSLVPN.

For IPSec VPN attempts, 3 or 4 events are tripped.  The ones that provide the most information about the incident are listed below.

715001     Group = GroupName, Username = asdf, IP = source ip address, Processing MODE_CFG Reply attributes.
113015     AAA user authentication Rejected : reason = Invalid password : local database : user = asdf

Can the ASA (with or without IPS module) automatically shun the source ip address when this event is triggered?  Obviously, my goal is to reduce the potenail for break in attempts.  Automatically shunning the source would assist in doing this.

Any help would be greatly appreciated.  thanks