Forum Discussion

MSZ_221163's avatar
MSZ_221163
Icon for Nimbostratus rankNimbostratus
Apr 13, 2017

Illegal HTTP status in response : 403

I am getting the subjected error code. This code is occuring only with one specific URL. It is working fine in one ASM Policy with 11.6.1 It is not working and generating support ID with error (ill...
ASM Advanced WAF
BIG-IP
security
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Apr 13, 2017

Hi,

 

response code 403 is not included in default allowed response code:

 

https://support.f5.com/csp/article/K7922

 

this is the normal behavior to block as a violation in version 11.6 and 12.1.

 

if it is not blocked in version 11.6, you may have unchecked "Illegal HTTP status in response" in blocking settings page.