Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

networksecurity2022's avatar
networksecurity2022
Icon for Nimbostratus rankNimbostratus
Mar 31, 2022

i rule

please help me to create Irule below requirement. If <sourec ip1 >or <source ip2> IPs are the sourceAddress and Host header is either <x.x.x.x>or <Y.Y.Y.Y> then you have to allow the communication. ...
security
networksecurity2022's avatar
networksecurity2022
Icon for Nimbostratus rankNimbostratus
Apr 01, 2022
Above rule not working,  request must allow. only reject Other than source ips, rest of the IPs will be blocked if they are having IP in the host header. 
  • Dario_Garrido's avatar
    Dario_Garrido
    Icon for Noctilucent rankNoctilucent
    Apr 01, 2022

    Hello.

    Check this one. 

    Rejects everything to those IPs (<x.x.x.x> or <y.y.y.y>) in the host header, except if the source is one of those IPs (<source ip1> or <source ip2>)

    when HTTP_REQUEST {
  if { ([HTTP::host] eq "<x.x.x.x>") || ([HTTP::host] eq "<y.y.y.y>") } {
    if { !(([IP::client_addr] eq "<sourec ip1>") || ([IP::client_addr] eq "<sourec ip2>")) } {
      reject
    }
  }
}