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

Forum Discussion

keefyweefy's avatar
keefyweefy
Icon for Nimbostratus rankNimbostratus
Mar 08, 2011

Filter on source & destination

Hello all     I'm trying to write what I presumed would be a simple iRule to restrict access from a client. We have a forwarding (IP) VS for a subnet say 192.168.1.0/24     I'm applying th...
application delivery
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devops
irules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Mar 08, 2011
I'd suggest using IP::addr and/or address type datagroups which will do bit comparisons instead of string comparisons of the IP addresses: 


when CLIENT_ACCEPTED {
   if { [IP::addr [IP::client_addr] eq 192.168.2.1] } {
      if { [IP::addr [IP::local_addr] eq 192.168.1.100] || [IP::addr [IP::local_addr] eq 192.168.1.101] 
         drop
      }
   }
}

Aaron