https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/301525#M334 <P>Thanks for answering my question.</P> Sun, 01 Dec 2019 16:18:48 GMT MP18 2019-12-01T16:18:48Z https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290529#M324 <P>I need to create custom signature for the dns traffic.</P><P>what is want is if dns query is about nxdomain then PA should drop it.</P><P>&nbsp;</P><P>Is this possible to config in PA?</P> Mon, 30 Sep 2019 04:44:17 GMT https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290529#M324 MP18 2019-09-30T04:44:17Z https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290545#M325 <P>Is your ask is to block DNS query traffic of specific hostname (nslookup hostname)? If yes, then it is possible to do it with PA. Let me know if my understanding is correct.</P> Mon, 30 Sep 2019 07:30:05 GMT https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290545#M325 Rajesh12 2019-09-30T07:30:05Z https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290706#M326 <P>I have name server and I see so many queries to the domain names that do not exist.</P><P>So i need to know if i can create custom signature for nxdomains</P> Tue, 01 Oct 2019 04:26:08 GMT https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290706#M326 MP18 2019-10-01T04:26:08Z https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290721#M327 <P>Ah I see. PA do have capability of blocking DNS queries for given name. But I don't think PA have capability of blocking nxdomain as PA will not have any prior knowledge of existent or non-existent status.</P> Tue, 01 Oct 2019 08:21:05 GMT https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/290721#M327 Rajesh12 2019-10-01T08:21:05Z https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/301525#M334 <P>Thanks for answering my question.</P> Sun, 01 Dec 2019 16:18:48 GMT https://live.paloaltonetworks.com/t5/custom-signatures/need-to-create-custom-signature-for-the-nxdomain/m-p/301525#M334 MP18 2019-12-01T16:18:48Z