02-24-2021 10:34 PM
can we blocked domain in palo alto if domain name contains is *.*covid*.* in palo alto.
I was also wondering whether blocking such domain will be better through dns sinkhole or URL filtering.
02-25-2021 12:21 AM
in URL filtering the url is broken up into tokens separated by dots (ie token.token.token)
in a token you can either add a string or a wildcard, but not both
but you can create custom vulnerabilities where you have full reign over the wildcards and regex you use to identify patterns
02-25-2021 12:24 AM
Hi @shubhamG ,
You can't use consecutive asterisks. Consecutive asterisks in a URL wildcard pattern can severely impact performance and is not supported. Instead, use a single asterisk or multiple carets (^) to indicate consecutive tokens.
Check the following article on how you can use asterisk or caret wildcards : https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/url-filtering/block-and-allow-lists.html
You might want to look into creating a custom application with a pattern match (you can use regular expressions to do a pattern match): https://docs.paloaltonetworks.com/pan-os/u-v/custom-app-id-and-threat-signatures/custom-application-...
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