How to remove DNS queries for banned sites?

Hello

I'm looking to create a certain number of signatures to DNS queries for banned sites, the only way I've implemented successfully is to create a signature (string UDP), so he abandons all traffic UDP 53 containing the banned site regex string.

I would like clarification from the experts to verify that this is the only way to do this, I know that there is a DNS Service engine, but I can't specify the COMPLETE domain name in this context. I don't know if I am missing something?

Thank you very much

You are on the right track. A personal signature of UDP is the only way you will find the applications that you want to remove.

The DNS engine does not allow for the custom string matches.

-Bob

Tags: Cisco Security

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