ZyWALL USG 100 Enter User Name/Password and click to login. User Name: Password: One-Time Password: (Optional) ( max. 63 alphanumeric, printable characters and no spaces ) Note: 1. Turn on Javascript and Cookie setting in your web browser. 2. Turn off Popup Window Blocking in your web browser. 3. Turn on Java Runtime Environment (JRE) in your web browser.