I have a kohana (php) web site and we have a problem with the sessions when used by computers on a local network under a proxy.
The problem: PC 1 and PC 2 are in the same local network. They use a proxy server to access the external web site. PC 1 access the site with "USER A", he is in the main page now and the site says "Connected with USER A". PC 2 enters the site and access with "USER B", he is in the main page now and the site says "Connected with USER B". PC 1 press F5 to reload the site main page, and the site now says that is logged with "USER B".
The system is installed externally and we have this problem only in this under-proxy network. Access from other PCs also under local networks (but no proxy) don have this problem.
We enabled the "user_token" part in the auth module (it uses a new table named "user_tokens" that uses the browser user agent), but the problem persists.
-- edit -- We are using Kohana 3.0, PHP 5.2.9 and postgres 8.4