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AbdullahAlshehri's avatar
AbdullahAlshehri
Icon for Altostratus rankAltostratus
Apr 26, 2022

F5 iRule Geolocation restriction

Hello, I want to know how I can restrict the access to specific one country only via iRule. For example: allow only users to access from "US" and block all other countries.
application delivery
security
  • David_Gill's avatar
    David_Gill
    Apr 28, 2022
    when FLOW_INIT {

    #
    # Drop everything except US
    #
    if { ! ([whereis [IP::client_addr] country] equals "US") } {
        log -noname local0. "Dropping connection from [IP::client_addr]/[whereis [IP::client_addr] state country continent ]"
        drop
    } 
}

    AFM not required.

AbdullahAlshehri's avatar
AbdullahAlshehri
Icon for Altostratus rankAltostratus

Hello  David_Gill,

I tested the iRule which I mentioned early and it worked fine.

Is there any difference with the one which you mentioned?

 

David_Gill's avatar
David_Gill
Icon for Cirrus rankCirrus
Apr 29, 2022

Functionally they do the same thing however ACL::action drop requires AFM whereas drop on its own does not which means the snippet works for a larger audience. Switch is generally used when making more than one comparison (as shown at https://clouddocs.f5.com/api/irules/ACL__action.html) which is why I used a single if statement. There is no need to define any variables either. That said, in both cases the end result is the same.