Hi,
Could you try following rules? I am not sure whether any of them works or not.
The highlighted Lookup Data Set should contain no record in it.
If it does not work you can try reverse method like below. This time, related Lookup Data Set should contain all valid/possible Response Codes.
------------------------------
Cezmi Cal
technical support engineer
Barikat Internet Guvenligi Bilisim Ticaret A.S.
Ankara
------------------------------
Original Message:
Sent: 12-06-2022 21:41
From: Jorge Luis Santamaria Silupu
Subject: Responde code empty
Hi.
I want to create a rule in which "Response Code" has an empty value. How could it be done there?
#On-PremisesWAF(formerlySecuresphere)
------------------------------
Jorge Luis Santamaria Silupu
Analista Ciberseguridad
CMAC PIURA S.A.C. - CAJA MUNICIPAL DE AHORRO Y CREDITO PIURA
Piura
------------------------------