SPNEGO/Kerberos authentication behind a proxy

[Houlala JAIMAL]

Hello,

I've setup two CAS 4.2.7 with SPNEGO authentication behind a proxy/load balancer.

Authententication works well if Cas Secured application connects directly to one or the other instance of CAS, but when application try to authenticate thru the proxy it fails.

I guess it's a issue with Kerberos configuration.Is there someone has a idea how to manage SPNego authentication behind a proxy/LB

Thanks