WCF SOAP Router Including Credentials

Hello,

I've been trying to create a WCF SOAP Router Service that can forward not
just the message body but also any security headers set by the originator of
the message. The destination service I'm routing messages to uses
WSHttpBinding, SSL with UserName/Password client credentials. Using guidance
from the Technology samples I can create a router that forwards messages
without security credentils but not with them. Can anybody point me in the
right direction... should I be creating a custom channel to handle this? or
is there a bundle of framework classes I should use?

Deployment scenario : Consumer connects to a router service on a DMZ (Out of
Domain). The router service is unable to authenticate the users of the
service. Router determins the correct destination service and forwards SOAP
message + security credentials. Destination service impersonates consumer and
replys to the message.

Any help or guidance would be appreciated!

Thanks,

Jimmer
.