way to get username & domainname?

[笠置 剛史]

hello all,

I can implement transparent authentication using Tickets by refering to following site.

using mod_auth_kerb and Windows 2000/2003 as KDC
http://www.grolmsnet.de/kerbtut/

As transparent authentication don't require username & password, Web server don't get username from web browser.
I'm trying to get username & domainname to reflect front page from person to person.
How do I get?

So I have tried following ways.
1,using environment variable by perl
e.g. REMOTE_USER REMOTE_IDENT AUTH_USER LOGON_USER 
These variables were empty.

2.using WSH by VBScript
 This way can display,but I must operate ActiveX popup windows.
I don't want to configure web browser if at all possible.
(because I must configure not one but many browser. )

It's my guess that there is some other way,because system is maintaining a log of principalname(username at realm). 
Is there any way to get username & domainname utilizing log?

Any idea and who knows what else ?

System Environment:
Web Server : Apahce kerberized wiht mod_auth_kerb
Web Browser : WinXP with IE
KDC : Win2kServer

Please, no flames about my bad English. 
Thanks!!