Forum Discussion

Nimbostratus

Jul 20, 2021

The request contains two IP address: 1 of the client and 1 append for cloudflare

Hello When my VS is invoked from Cloudflare, the header contains two ip addresses. I have identified that the first ip address of the header corresponds to the user that connects and the second...

MVP

Jul 20, 2021

Hi satyr,

Cloudflare has another header you could use, see the article for True-Client-IP header:

Understanding the True-Client-IP Header

Enable this header and try to update your iRule like this:

when HTTP_REQUEST {
    HTTP::header insert X-Forwarded-For [HTTP::header value "True-Client-IP"]
}

Let us know if this has solved your issue.

Daniel

satyr

Nimbostratus

Jul 20, 2021

Hello Daniel

Thanks for read my question

Let me do the test and I would confirm if the result was successful

satyr
Nimbostratus
Jul 21, 2021
Hello Daniel

The problem persists, 2 ip's are seen and the page does not load at the application level
Daniel_Wolf
MVP
Jul 22, 2021
Is there another device involved that could modify the X-Forwarded-For header? Either between Cloudflare and BIG-IP or BIG-IP and application server?

KR
Daniel