[users@httpd] Reverse Proxy with internal redirects

[scott . marquardt]

I have a 2 node internal environment. http://internal-apps and http://internal-sso.  The reverse proxy has two virtual hosts configured as http://external-apps and http://external-sso.  All reverse proxy configs work except when the application server needs to authenticate to the sso server.  The app server redirects the client to the internal name of the sso server and not to the external name.  There is no way to change the redirection problem on the app server.

My question is, can the location header variable be rewritten before the external client receives it and makes the request to the internal server name?