Chapter 19. Other Network Services
In This Chapter
Introduction to other
network services
Managing and
monitoring other
network services
Snow Leopard Server runs a variety of other important core network services, some of which are required to properly run a Mac OS X Server environment. This chapter describes how these additional core services work, what's involved in planning them, how the services are configured, and how to maintain and monitor them.
Introduction to Other Network Services
Snow Leopard Server has other network services that are vital to properly running Mac OS X Server. These services include:
Network Time Protocol (NTP) for syncing network time services
Simple Network Management Protocol (SNMP) for event logging
Secure Shell (SSH) for remote login
Virtual Network Computing (VNC) for remote screen sharing
Remote Management for use with Apple Remote Desktop
Network Time Protocol
NTP synchronizes network clocks using UTC (Coordinated Universal Time), a global standard for tracking the mean solar time maintained by the Royal Observatory in Greenwich. UTC compensates for the slowing of Earth's rotation by adding leap seconds at irregular intervals to the time calculated by atomic clocks in order to reflect the time maintained as Greenwich Mean Time (GMT).
Authoritative NTP servers, referred to as Stratum 1 servers, maintain the current UTC time. Secondary servers, known as Stratum 2 and 3 servers, regularly request the time from Stratum 1 servers and estimate the delay in sending ...
Get Snow Leopard™ Server now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
