How is the ACL name of the router for fleeing?

I want to test running and have a question, the name of the ACL.

I configured the device blocking on the IDM,

-blocking interface Fastethernet0/0 =

-direction = in

-Pre IDS_PRE = ACL name

-Ask the IDS_POST = ACL name

Change a signature "ICMP-echo" to shunhost and update on the router but added new ACL under Fastethernet0/0 as the name IDS_Fastethernet0/0_in_0 and rocking it with IDS_Fastethernet0/0_in_1.

Q. why the ACL name not follow my name on the IDM?

Thanks in advance.

I think that there is some confusion about what are PreACl and PostACL.

The PreACL and PostACl entries in IDM do not affect what's name created sensor ACL on the router.

The sensor will always create an ACL that is named with the following format:

IDS___<0or1>

So for you the configuration it would create the following names of ACL:

IDS_Fastethernet0/0_in_0 and IDS_Fastethernet0/0_in_1

E he uses 2 ACL because it cannot modify an ACL that is currently applied on the interface. So if ACL 0 is currently applied then it will create 1 ACL and then apply ACLs one (which Désimpute ACL 0).

The sensor can then remove 0 and create a new ACL 0 when a change has to happen.

So, what are the pre and Post ACL names used for?

One of the biggest complaints we had with older versions of the probe was that the user could add no lines to the ACL that created the sensor.

So we came to the top with the pre and Post ACL so that users can add entries to the ACL that creates the sensor.

The user must connect on the router itself and create an ACL with little matter the name they want. Inside of the ACL, they put the entries they finally want to see at the top of the ACL that will create the sensor.

When they set up the sensor, they take the name of the ACL, they created and enter it in the field for the name of PreACL.

The user can do the same for the entries they want at the bottom of the ACL generated by the sensor by creating another ACL on the router. Put it in the Scriptures they want to see at the bottom of the created sensor ACL and then type the name in the name of PostACL field.

If the names of pre and Post ACL aren't going to use to name the ACL created sensor.

But on the contrary these ACL is read out of the router by the sensor, and these ACL entries will be placed inside the ACL, created by the sensor.

Tags: Cisco Security

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