IIS NLB not working with proxied subdomains

Hello everyone,

We have multiple subdomains hosted on IIS NLB with 2 nodes, Before proxying my domains with CF, IIS NLB was balancing between the 2 nodes properly; however, after proxying, all requests are switching among the 2 nodes. Do you guys have any clues as to what I have to do in order to fix this issue?

Thank you, guys, in advance.

Saludos!

You’ll probably want to set the IIS LB to use a cookie for session affinity …