I think he is looking for tcp-options inside tcp-map "Use the *tcp-map* command to enter tcp-map configuration mode. Use the * tcp-options* command in tcp-map configuration mode to clear selective-acknowledgement, window-scale, and timestamp TCP options. You can also clear or drop packets with options that are not very well defined."
http://www.cisco.com/en/US/docs/security/asa/asa84/command/reference/t.html#wp1561309 but I am not sure if there is any kind of Cisco documentation about tcp-options. Cheers, -- Fernando
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