Cisco OL-4015-08 Podręcznik Użytkownika Pobierz pdf (Strona 428)

Chapter 19 Intrusion Prevention System

Import Signatures

19-46

Cisco Router and Security Device Manager Version 2.2 User’s Guide

OL-4015-08

Apply Changes button

Click to deliver newly imported signatures, signature edits, and newly enabled or

disabled signatures to the router. When the changes are applied, the yellow Wait

icon is removed from the ! column.

Discard Changes button

Click to discard accumulated changes.

Assign Actions

The window contains the actions that can be taken upon signature match.

Available actions depend on the signature, but the most common actions are listed

below:

• alarm—Generate an alarm.

• denyAttackerInline—creates an ACL that denies all traffic from the IP

address that is considered the source of the attack by the IOS IPS system.

• denyFlowInline—creates an ACL that denies all traffic from the IP address

that is considered the source of the attack that belongs to the 5-tuple (src ip,

src port, dst ip, dst port and l4 protocol). denyFlowInline is more granular

than denyAttackerInline.

• drop—Drop the packet.

• reset—Reset the connection.

Import Signatures

Use this window to import signatures from an SDF on your PC. The information

in this window tells you which signatures are available from the SDF, and which

of them are already deployed on your router.

Importing signatures is a two-step process. In Step 1, performed in the upper part

of the window, you choose the signatures that you want to import. In Step 2,

performed in the lower part of the window, you choose whether to merge these

signatures with the signatures that are already configured on the router, or to

replace the signatures on the router with the signatures that you are importing.

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