silly question on module aip - ssm

When the aip ssm module is in inline mode. fact the package first analyzed by the aip ssm module or it is first checked by the firewall rules if it is allowed and then sent to the aip ssm module.

can someone throw some light on this.

concerning

Sushil

All firewall rules are applied prior to sending the packets of the SSM.

So if the package will be deleted by a firewall rule, the package will not be sent to the SSM.

If the package will be changed by a firewall rule, then the change will be before being sent to the SSM.

There are two exceptions, and this is the encryption and final release of the package.

Encryption occurs after they are sent to the SSM, so SSM always sees a unencrypted traffic (where the ASA is encryption tunnel endpoint).

And of course send the package by the SAA through external sound interfafes happens after the sending of the SSM.

In the case of promiscuity, followed by the SSM, encryption and pass arrive just after that a copy is sent to the SSM.

In the case of the line followed by the SSM, encryption and transmit occur only after that the SSM has completed the analysis and the package was not refused by the SSM.

Tags: Cisco Security

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