HVAC Control in the New Millennium.pdf - HVAC.Amickracing

HVAC Control in the New Millenniumalization and control over the Internet via technologies such as IIS/PeerWeb server, HTTP, XML, ActiveZ and embedded Web servers (Figure 7-3). This is sometimes called a Web-Aware Enterprise Network (WAEN).The recent explosion of WAENs in industrial automation hascaused some concern about the security of networks connected to theInternet. Implementing a security blueprint that fits your Internet requirementsis critical as Web capability moves ahead. Several steps canbe taken to secure a network against unwanted intrusion when connectedto the Internet. There are some basic security technologies thatcan be used against the commonly used attacks that could compromisea network’s integrity.Connecting a LAN or WAN (Wide Area Network) to the Internetexposes the network to more than 50,000 other networks and their users.These connections provide opportunities for information sharing, butFigure 7-3. Browser-based system©2001 by The Fairmont Press, Inc. All rights reserved.