Hello.
New to IMPERVA's Cloud WAF.
I have configured the following rule on a test site:
When:
HeaderValueLength > {"If-None-Match";0} & ( HeaderValue contains {"If-None-Match";"\""} | HeaderValue contains {"If-None-Match";"\x22"} | HeaderValue contains {"If-None-Match";"0"} )
Then:
Block request.
I am generating requests using "wget" command on a Linux system. I can confirm they do contain header "If-None-Match" with value "0123456789abcde" (I can watch them in the logs of our NGINX load-balancers). However, they are not blocked by the IMPERVA engine.
What am I doing wrong? Can someone advise, please?
Thanks,
#CloudWAF(formerlyIncapsula)------------------------------
Panos Tsapralis
Head of Networks
SMARTBOX Group UK Ltd (BUYAGIFT)
London
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