Likewise Open 是一个Linux、Unix、Mac OS 下的应用程序用来将这些系统的机器加入到 Windows 活动目录的安全认证。
主要功能：
1. joining non-Windows systems to Active Directory domains in a single step from the command line or from a GUI; 2. authenticating users with a single user name and password; 3. enforcing the same password policies for all platforms; 4. supporting multiple forests with one-way and two-way cross forest trusts; 5. caching credentials in case your domain controller goes down; 6. and providing single sign-on for SSH and Putty.
