Forum Discussion

Nandhi's avatar
Nandhi
Icon for Cirrus rankCirrus
Jan 10, 2024

Add a custom "X-forwarded-for" header name

Hello Everyone, Need an assistant to add custom http header name and value to insert XFF headers. The default name "X-forwarded-for" cannot understand by the client side. Example need to add name "H...
application delivery
security
Nandhi's avatar
Nandhi
Icon for Cirrus rankCirrus

Thanks Paulius & Zamroni.

The actual need is bit different. The end point expecting the header name "HTTP_XFF" with original client IP. By default, header name uses the string X-forwarded-for:<client-ip>

The end point does not support "X-forwarded-for" and supported configuration is ,<add key="LoadBalancerClientAddressHeader" Value="HTTP_XFF"/>

zamroni777's avatar
zamroni777
Icon for Nacreous rankNacreous
Jan 10, 2024

when the http request comes to f5 vs, does it already have xff header?

if no, then you simply can set the custom header name in http profile as Paulius mentioned above.
example in picture 1

but if yes, then you can use gui based traffic policy to copy and create new xff header.
example in picture 2