1. Technology Strategies for the Hospitality Industry© 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Networks and Security Chapter 4

2. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Interview Nicholas Poretta Director of Telecommunications Atlantic City Convention Center

3. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Interview (cont.) Basics: Before anything else, visit local physical security-“have a good lock on that door” Analyze current hardware and software usage Maintain redundant links Have a backup plan!

4. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Interview (cont.) The future: Create a seamless, wireless network for the web enabled traveler that is secure!

5. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 1. Introduction Benefits of Networking  Allow resources to be shared  Allow data and information to be shared Networking Objectives  Security = Safe  Performance = Fast  Reliability = Running

6. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 2. Small Networks Nodes Network Interface Cards (NIC) Bits Per Second (BPS) Local Area Network (LAN)

7. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Medium Twisted Pair Copper Wires  RJ-11  RJ-45 Coaxial Cable Fiber Optics Wireless

8. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Network Architecture Topology  Bus  Ring  Star Hub vs. Switch Network Operating System (NOS) Servers  File  Print  Database  Web Client/Server (C/S) vs. Peer to Peer

9. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 3. Large Networks Convergence Channel Packet Switching vs. Circuit Switching Modem Multiplexers Concentrators Wide Area Networks (WAN) Bandwidth

10. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 4. Transmission Technologies ISDN (Integrated Services Digital Network) DSL (Digital Subscriber Lines) Cable Modems T1 Backbone  Frame Relay  Asynchronous Transfer Mode (ATM)  T3  Synchronous Optical Network (SONET)

11. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 5. The Internet Network Protocol  Error Checking  Data Compression  Sending  Receiving TCP/IP (Others: NetBui and IPX) Gateways

12. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Internet Addresses IP Address  Static vs. Dynamic  Domain Name Server (DNS) IP Address: 198.4.159.10 Web Address: www.prenhall.comwww.prenhall.com Domain:.com.edu.gov.int.mil.net.org Two-letter country code such as.us.uk.de ICANN:.biz.pro.museum.aero.name.coop.info ICANN Routers http://www.dns-tools.com/ http://www.networldmap.com/TryIt.htm

13. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 6. World Wide Web Part of the Internet Uniform Resource Locator (URL) Hypertext Markup Language (HTML) Extensible Markup Language (XML) Browsers Search Engines

14. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 7. Internet Layout Web Server Intranet Extranet

15. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 8. Large Wireless Networks Microwave Satellites Cellular Personal Communication Services (PCS) Wireless Application Protocol (WAP) Wireless Markup Language (WML)

16. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 9. Other Network Usage in the Enterprise Electronic Data Interchange (EDI) Example -payroll

17. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 10. Security Virtual Private Network (VPN) Firewall Demilitarized Zone (DMZ) Encryption (128-Bit) Internal Controls Social Engineering

18. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 11. Forward Looking Issues in Hospitality Videoconferencing Wireless Networks – Security Issues Voice Over Internet Protocol (VOIP)

19. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 12. Summary A “down” network can result in lost revenue Managers must understand networks, not just delegate Security all too important–have a plan and test it!

20. Technology Strategies for the Hospitality Industry © 2005 Pearson Education, Inc Nyheim, McFadden, & Connolly Upper Saddle River, New Jersey 07458 Further Information www.internetweek.com www.whatis.com www.redherring.com