For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Philippe_Tempel's avatar
Philippe_Tempel
Icon for Nimbostratus rankNimbostratus
Dec 05, 2012

Permit only North American network blocks

Is it possible to only permit North American netowrk bloks to an F5 hosted site (or VIP)? I would get the list for Canada, US and Mexico from here: http://www.ipdeny.com/ipblocks/. Then massage it into a list for the F5. Finally, create an iRule to use it. Have searched other posts but they were a bit different. Apology in advance if I didn't search well enough. ;-)

 

 

Thanks,

 

Philippe

 

application delivery
dev
devops
iRules

3 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Dec 05, 2012
    Hi Philippe,

    This should be very simple using the whereis command to query the client IP address in the inbuilt GeoIP database: 

    
 https://devcentral.f5.com/wiki/iRules.whereis.ashx
when CLIENT_ACCEPTED {

if {not ([whereis [IP::client_addr] continent] eq "NA")}{
reject
}
}

    Aaron
  • Philippe_Tempel's avatar
    Philippe_Tempel
    Icon for Nimbostratus rankNimbostratus
    Dec 06, 2012

    Thanks hoolio. i updated the GeoIP database per the instructions here:

     

    http://support.f5.com/kb/en-us/solu...11176.html

     

    and saved your iRule above. One question that came up was if the F5 can suppout privlidge escalation. We may have a case where someone from work may travel abroad and want access even if this is in place. Would this be possible? Also am curious as to how GeoIP works with multinational companies. If the company uses part of its IP block in different countries, then will GeoIP be able to tell where they are from?

     

    Thanks,

     

    Philippe