Apple Training Series: Mac OS X System Administration Reference, Volume 1

Lesson 22.  Unmanaged Networking

Lesson 23.  IP Networks and Services

Lesson 24.  Mac OS X Network Architecture

Lesson 25.  Resolving Network System Issues

Lesson 26.  Maintaining Local Volumes and Files

Lesson 27.  File Permissions and Flags

Lesson 28.  Network File Services

Lesson 29.  Mounting Remote File Systems