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

satyr's avatar
satyr
Icon for Nimbostratus rankNimbostratus
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...
application delivery
cloud
iRules
LTM
Mayur_Sutare's avatar
Mayur_Sutare
Icon for MVP rankMVP
Jul 20, 2021

Does your application traffic flow is like given below ? -

 

Client --> CloudFlare --> F5 vServer --> Backend servers

 

If yes, then xff settings enabled under http profile mapped on the vServer is adding CF IP in the header. The original client IP in the header is added by CF itself. In this case, disabling xff settings under F5 http profile should help you. But this change/setting will be applicable for all the application urls which are on that vServer.