Forum Discussion

Eljay's avatar
Eljay
Icon for Cirrus rankCirrus
Aug 12, 2021

Bypassing ASM on HTTP response

Is it possible to prevent ASM from blocking responses when there's a specific HTTP header present in the HTTP response? Let's say we block responses with HTTP status code 500 by default in our securi...
ASM Advanced WAF
devops
security
  • spalande's avatar
    spalande
    Aug 13, 2021

    Try with an iRule. use appropriate asm policy name.

    Use logging to see if condition is getting triggered and then it can be disabled. 

    when HTTP_RESPONSE  {
ASM::enable "/common/asm_policy"
if { ([HTTP::status] == 500) and ([HTTP::header value Content-Type] eq "application/problem-handled-return-to-client") }{
log local0.info "disable asm"
ASM::disable
return
   }
}
spalande's avatar
spalande
Icon for Nacreous rankNacreous
Aug 13, 2021

Try with an iRule. use appropriate asm policy name.

Use logging to see if condition is getting triggered and then it can be disabled. 

when HTTP_RESPONSE  {
ASM::enable "/common/asm_policy"
if { ([HTTP::status] == 500) and ([HTTP::header value Content-Type] eq "application/problem-handled-return-to-client") }{
log local0.info "disable asm"
ASM::disable
return
   }
}