Fortunately, a host of security features are built into the kernel, are packaged with one of the many Linux distributions, or are available separately as open source applications.

• 幸运的是,有很多安全特性,或者已经编译到内核中,或者已经加入到很多Linux发行版本中,或者可以以开放源代码应用程序的形式单独获得。