Dear Markus, One more finding... when i issued the command klist.. i feel like something is wrong. pls look below; [root@linuxproxy ~]# klist Ticket cache: FILE:/tmp/krb5cc_0 Default principal: HTTP/linuxproxy.panasonic.com@xxxxxxxxxxxxx Valid starting Expires Service principal 06/06/09 18:22:41 06/07/09 04:23:20 krbtgt/PANASONIC.COM@xxxxxxxxxxxxx renew until 06/07/09 18:22:41 Is it correct like HTTP/linuxproxy.panasonic.com@xxxxxxxxxxxxx i feel like it should be HTTP/linuxproxy@xxxxxxxxxxxxx and no idea about krbtgt/PANASONIC.COM@xxxxxxxxxxxxx ????? pls guide...