Have a customer that is running IIS 6, and needs to source nat traffic from ACE module to those servers. From what I can see, IIS 6 does not support/use “x-forwarded-for” header natively, and require an add-on module. I found only one option (
http://www.winfrasoft.com/X-Forwarded-For.htm#Pricing). Does anyone know of another option/approach to accomplish the same thing? PBR not a viable option, BTW.