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 (illegal http status in response: 403) on other ASM Policy with 12.1.1.

 

ASM Advanced WAF
BIG-IP
security
  • Samir_Jha_52506's avatar
    Samir_Jha_52506
    Icon for Noctilucent rankNoctilucent
    Apr 13, 2017

    Looks like not compatible with latest F5 version(v12). Raise ticket with support Team

     

    • MSZ's avatar
      MSZ
      Icon for Nimbostratus rankNimbostratus
      Apr 13, 2017

      No this is not the version issue. I temporarily allowed this code and server team is able to know the reason.

       

  • 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.