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ASA Null0 interface

Dear NetPro!

I would like to route some prefix to null0 in a Cisco ASA 5540 perimeter firewall. I have found no information about this virtual interface in ASA. Does anybody have any experience how to configre and implement these static routes?

Thanks in advance!

BR

Belabacsi

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Blue

Re: ASA Null0 interface

Belabasci

AS far as i know the ASA does not support a Null0 interface in the same way IOS routers do.

The solution i have used is to point the routes to the nearest next-hop router under your control and then Null0 them on that router.

Jon

2 REPLIES
Hall of Fame Super Blue

Re: ASA Null0 interface

Belabasci

AS far as i know the ASA does not support a Null0 interface in the same way IOS routers do.

The solution i have used is to point the routes to the nearest next-hop router under your control and then Null0 them on that router.

Jon

Cisco Employee

Re: ASA Null0 interface

There is no such thing on ASA. Why not simply deny the traffic in your access-list(s) ?

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