Security Policy Actions

Description of the available security policy actions.
For traffic that matches the attributes defined in a security policy, you can apply the following actions:
Allows the traffic.
Blocks traffic and enforces the default Deny Action defined for the application that is being denied. To view the deny action defined by default for an application, view the application details in
or check the application details in Applipedia.
Silently drops the traffic; for an application, it overrides the default deny action. A TCP reset is not sent to the host/application.
For Layer 3 interfaces, to optionally send an ICMP unreachable response to the client, set Action:
and enable the
Send ICMP Unreachable
check box. When enabled, the Security Processing Node sends the ICMP code for communication with the destination is administratively prohibited—ICMPv4: Type 3, Code 13; ICMPv6: Type 1, Code 1.
Reset client
Sends a TCP reset to the client-side device.
Reset server
Sends a TCP reset to the server-side device.
Reset both
Sends a TCP reset to both the client-side and server-side devices.
A reset is sent only after a session is formed. If the session is blocked before a 3-way handshake is completed, the Security Processing Node will not send the reset.
For a TCP session with a reset action, the Security Processing Node does not send an ICMP Unreachable response.
For a UDP session with a drop or reset action, if the
ICMP Unreachable
check box is selected, the Security Processing Node sends an ICMP message to the client.

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