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42 Chapter 2 Inside Mac OS X Server
VPN
You can set up a Virtual Private Network (VPN) using Mac OS X Server.
VPN is a network transmission protocol that uses encryption and other technologies to
provide secure communications over a public network. Typically the public network is
the Internet, but VPNs are also used to support connections between multiple intranets
within the same organization and to join networks between two organizations to form
an extranet.
VPNs transmit encrypted IP packets so that only legitimate targets can interpret them,
protecting the contents of messages from network sniffing. Mac OS X Server lets you
set up and manage VPN policies that support different authentication and
authorization options and network connection attributes.
Mac OS X Server’s VPN service serves Mac OS X, Windows, and UNIX clients and
supports strong authentication using MS-CHAP and IPSec.
IP Failover
You can configure IP failover to help maximize server availability.
IP failover is a way to set up a standby server that will take over if the primary server
fails. The standby server takes over the IP address of the failed server, which takes the IP
address back when it is online again. IP failover is useful for DNS servers, web servers
hosting websites, media broadcast servers, and other servers that require minimal data
replication.
Media Streaming and Broadcasting
QuickTime Streaming Server (QTSS) lets you stream multimedia in real time using the
industry-standard RTSP/RTP protocols. QTSS supports MPEG-4, MP3, and QuickTime file
formats.
You can deliver live and prerecorded media over the Internet to both Macintosh and
Windows users, or relay streamed media to other streaming servers. You can provide
unicast streaming, which sends one stream to each individual client, or multicast
streaming, which sends the stream to a group of clients.
• For more information about QTSS, refer to the QuickTime website
(www.apple.com/quicktime/products/qtss/).
• For information about managing streaming services on Mac OS X Server, see the
QuickTime Streaming Server administration guide.
LL2343.Book Page 42 Thursday, August 14, 2003 5:12 PM