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sandiksk_35282's avatar
Icon for Altostratus rankAltostratus
Mar 06, 2018

F5 Whitelisting/ Allowing a specific range of traffic to VS

We have a req to allow only specific subnet range and IPs to access the virtual server it would be great if you help me on this. VS on f5 is configured to listen only on port 443.  
  • Hannes_Rapp_162's avatar
    Mar 06, 2018

    Create IP type LTM data-group. Define allowed IP/subnet values, and add optional descriptions. You can find data-group creation page at

    Local Traffic - iRules - Data-group List
    . Example of an IP type data-group in CLI/TEXT format:

    ltm data-group internal datagroup_allowed_ip {
      records { { } { }
      type ip

    Create an iRule that checks for matches against entries in datagroup_allowed_ip

      if { [class match [IP::client_addr] eq "datagroup_allowed_ip" ] }{
         Traffic is allowed. Client IP match found in datagroup_allowed_ip
      } else {
         Traffic is dropped. Client IP match not found in datagroup_allowed_ip