Forum Discussion

Nimbostratus

Sep 14, 2016

irule question

I want to write an iRule that will look at the client IP and direct the to a specific URL. I need some help with the irule if CLIENT_IP -LIKE X.X.X.X [ HTTP_REQUEST HTTP://SERVER/INDEX.HTM...

application delivery

iRules

Kai_Wilke

MVP

Sep 15, 2016

Hi pedinopa@gmail.com,

the best approach would be to use a LTM datagroup to store the different IP Addresses / Subnets and to use the

[class]

command to lookup those IPs within an iRule and then trigger the redirect. If you need to add additional IPs then you don't need to change your iRule. Just add a new entry into the data-group using the WebInterface.

Data Group:

ltm data-group internal DG_REDIRECT_IPs {
    records {
        1.1.1.1/32 { }
        2.2.2.2/32 { }
        3.3.3.3/32 { }
        10.0.0.0/8 { }
        172.16.0.0/12 { }
        192.168.0.0/16 { }
    }
    type ip
}

iRule:

when HTTP_REQUEST {
    if { [class match [getfield [IP::client_addr] "%" 1] equals DG_REDIRECT_IPs]] } then {
        HTTP::redirect "http://SERVER/index.htm"
    }   
}

For further information you may take a look to the