Remove / reset / Shun

Can someone explain the difference between 'Drop', "TCP Reset" and "Shunning" on a PIX?

Thank you!

The 'drop' does not refer to a fall of the connection, it simply means the PIX will drop the package that generated the alert and send it through. for TCP "reset" means associated alerts, which the PIX will send a TCP RST effectively at both ends of the connection, killing any TCP connection that has been established.

Fleeing can be set up on an external sensor for certain signatures. When traffic is detected by an alert that has been configured to be avoided, the sensor to send the telnet/ssh for the PIX and applies the command "run" on the source address of the package (s) that generated the alert. The shun command simply means the PIX pass of any package of this address, it is not applied to an interface specially, but for the PIX as together for any interface package comes on, it will be deleted.

See http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_62/cmdref/s.htm#1026366 for more details.

Tags: Cisco Security

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