With the PAM framework, multiple authentication technologies can be added without changing any of the login services, thereby preserving existing system environments.
通过使用pam框架，可以添加多种认证技术，而不必更改任何登录服务，从而可以保留已有的系统环境。
2
PAM offers database and system developers a great deal of flexibility and control over authentication policies.
PAM 为数据库和系统开发人员提供了很大的灵活性以及对身份验证策略的控制能力。
3
The primary purpose of supporting PAM is having the ability to use enhanced operating system-level authentication.