1. Network LANscape Servers & Equipment Found In a Typical Local Area Network (LAN) By George Squillace New Horizons of MichiganGeorge Squillace MCT, MCSE, MCDBA MCITP – Database Administration MCITP – Enterprise Messaging

2. 2 Building Blocks of a Typical LAN Application Servers Infrastructure Servers Infrastructure Equipment

3. Infrastructure Equipment – Part I of III

4. 4 Switches Switches replace Hubs Hubs receive a transmission in one port and retransmit out all other ports Connect Local Machines on the same “street” Many available brands Cisco is a popular brand Can vary in size and complexity Small Large, Enterprise HubsEnterprise Hubs The elaborate switches require programming, which requires training Switches use hardware, or physical addresses Switches still forward broadcast transmissions out every port!

5. 5 Routers Comparison: Switches connect machines on the same “street” Routers connect segments (think one “street” to another) Manufacturers Cisco Windows Many Other Vendors Routers can be very complex and require programming, which requires training Enterprise Hubs can combine routing and switchingEnterprise Hubs

6. 6 Firewall (Routers) A device (specialty router) that selectively permits traffic across its connected networks Many available brands Cisco PIX Microsoft ISA Server 2006 CheckPoint Watchguard SonicWall Can be very elaborate and successful implementation often requires training

7. 7 WAN Connections Provides a connection to a distant, external network

8. 8 ISP Connections Provides a connection to an Internet Service Provider Other services often are added beyond merely providing a pathway to the Internet, such as mail services

9. 9 Network Diagram

10. Infrastructure Servers – Part II of III

11. 11 Protocol & TCP/IP Basics Before network entities can communicate they require a common network protocol suite Virtually the only LAN protocol suite today is the TCP/IP suite (Transmission Control Protocol/Internet Protocol) TCP/IP is a complex protocol family and requires a fair amount of knowledge to implement successfully

12. 12 DHCP Servers (Dynamic Host Configuration Protocol) A service that provides IP Addresses to machines as they connect to the network No machine on a TCP/IP network can communicate with other machines unless it has a unique IP Address

13. 13 Directory Servers (a.k.a. Authentication Servers) Servers must exist in the network that validate identity of users, computers, and services For Microsoft networks, Active Directory Domain Controllers For NetWare networks, eDirectory Servers In Unix, NIS Server (Network Information System) Multiple Directory Servers may exist in the network to provide redundancy

14. 14 Name Resolution Servers On TCP/IP networks computers use IP Addresses to connect to other computers and devices But humans use friendly names to refer to computers (see example below) Used to point friendly names to IP Addresses Examples of Name servers DNS (Domain Name System) WINS (Windows Internet Name Service)

15. 15 Remote Access Servers Use for connecting someone on the outside of a corporate network to enable access of internal resources such as File Servers and electronic mail Examples Most firewalls also provide this capability RRAS (Microsoft Routing & Remote Access) Virtual Private Networks (VPNs) extend remote access and encrypt the pathway between the client machine and the remote access server Providers of remote virtual desktops, which is an alternae or additional remote access technology Terminal Services Citrix Server

16. 16 File Servers Use to store corporate/organization documents and work Must be secured Must be organized and maintained New folders created Permissions changed Old data removed or migrated

17. Application Servers – Part III of III

18. 18 Mail Servers Exchange GroupWise Internet Service Providers may provide: SMTP (Simple Mail Transport Protocol) {outbound} + POP3 (Post Office Protocol) {inbound} SMTP (Simple Mail Transport Protocol) {outbound} + IMAP4 (Internet Message Access Protocol) {inbound}

19. 19 Database Servers Microsoft SQL Server Oracle DB2 (IBM) Informix Sybase OpenSource options MySQL PostgreSQL

20. 20 Web (HTTP) Servers Apache Windows (IIS) NetWare SharePoint is a specialty web server/portal

21. 21 Telephony Servers PBX Integration Unified Messaging

22. 22 FAX Servers

23. 23 Instant Messaging Servers

24. 24 Network Diagram

25. Network LANscape Part II Courses Applicable to Typical Infrastructure Servers & Application Servers

26. 26 Primary Infrastructure Equipment {mostly Cisco} Courses INTRO to Cisco Networking Technologies ICND, Interconnecting Cisco Network Devices BSCI, Building Scalable Cisco Internetworks BCMSN, Building Cisco Multi-Layer Switched Networks SNPA, Securing Networks with PIX Firewall and ASA Microsoft Course 2824B (for ISA Server 2004)

27. 27 Primary Windows Server Courses for Infrastructure Servers 2274, Managing a Windows Server 2003 Environment Directory Services management File Server Services 2275, Maintaining a Windows Server 2003 Environment 2276, Implementing a Windows Server 2003 Network Infrastructure: Network Hosts TCP/IP Networking 2277, Implementing a Windows Server 2003 Network Infrastructure: Network Services DCHP DNS WINS Remote Access 2279, Planning, Implementing and Maintaining a Windows Server 2003 Active Directory Infrastructure Directory Services installation

28. 28 Primary Microsoft Application Server Courses Exchange 2400C Administration (for Exchange 2003) SQL Server 2780B Database Administration 2779B Database Implementation BI and many, many other courses SharePoint 2014 2552 2553 Several others SMS 2596 BizTalk

29. 29 Resources Microsoft Learning websiteMicrosoft Learning e-Squillace.com website-Squillace.com e-Squillace.com TechReference homee-Squillace.com TechReference e-Squillace.com Diagrams Diagram, How Do Computers Find Services on the Network?