topic Letsencrypt (acme) challenge URL in Custom Signatures

Letsencrypt (acme) challenge URL

Alejandro_Grijalba — Mon, 19 Apr 2021 17:09:56 GMT

I created this pattern to recognize Letsencrypt (acme-protocol) challenge.

You need to create a custom application with these fields:

Typo: Transaction
Context: http-req-uri-path
Pattern:

^GET /\.well-known/acme-challenge/

That's the best I could bet.

Btw, I did not know before that "http-req-uri-path" had to include the method (GET), so I had a hard time using the regex anchor "^".

Re: Letsencrypt (acme) challenge URL

nikoolayy1 — Thu, 13 Jan 2022 09:12:15 GMT

You can look at the "QUALIFIER" option as you can select the request method "POST" or "GET" from there and maybe you will not need to specify it in the pattern match.

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Also for blocking something maybe better use IPS signature than app signature:

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