| English | Japanese |
| Password Authentication Protocol | パスワード認証プロトコル (A method for verifying the identity of a user attempting to log on to a Point-to-Point Protocol (PPP) server) |
| Shiva Password Authentication Protocol | Shiva パスワード認証プロトコル (A two-way, reversible encryption mechanism for authenticating PPP connections employed by Shiva remote access servers) |