How to Windows auth working on nginx reverse proxy ???

[flapjack]

I config a reverse proxy to Windows IIS 6.0 (windows auth), visit windows server url is ok.

Visit nginx proxy to this site tips my input pwd & username, repeat this tips input over, repeat, repeat, repeat, repeat.

this is my nginx config

    server {
        listen 80;
        server_name xxx.com;

        location / {
            proxy_pass http://xxx.com;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_max_temp_file_size 0;
            proxy_connect_timeout 30;
            proxy_read_timeout 120;
        }
    }

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,72871,72871#msg-72871