It may look similar, but Mac OS X Server has some very different functionality from Mac OS X Client. The differences lie in the fact that Mac OS X Server, like most other servers, is used to share data. That data is shared across a variety of protocols, according to the type of data being shared. Therefore, it naturally follows that you will need to take additional precautions to properly secure Mac OS X Server and on a per-service basis. In this chapter, we'll primarily focus on the services that are specific to Mac OS X Server and how to secure them, paying attention to where the best practices differ from Mac OS X Client.KeywordsServer SecurityDirectory ServiceCertificate AuthorityServer AdminSecure Socket LayerThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.