Clear the firewall access list hit counters on a Cisco ASA / PIX / FWSM

When traffic matches an access list rule, the hit count on the access list rule is incremented.

To reset this hit count to zero, you can use the following command (please note that the hit count counters can only be reset on the whole access list, not on a single access list rule).

clear access-list nameofyouraccesslist counters