I was able to bring up a login screen by adding user:pss before the ip address, and login with 'administrator' but all I got was another 3 lines on a green background:

Index of /adm/

mode links bytes last-changed name
dr-x 2 326 Feb 22 2008 ./
dr-x 2 326 Feb 22 2008 ./
dr-x 2 326 Feb 22 2008 ./

Still trying!