Home Networks

ICS-100

Dale Gibler

Why build a network?

Why build a network system.

Share data Share files Share applications Communicate Share internet connection Share peripherals It’s just cool!

Getting started:

Requirements list Model: Logical and physical Network topology to use Hardware Protocols Operating system Applications

Requirements:

What will this network be used for? How many users? What devices will be used? Bandwidth allocation. Management and monitoring. Speed. Cost: Budget

Modeling: Logical network diagram

Internet

Router

Research Computer Administration Computer

Netware Server Network shared printerShared using Netware

Monday, November 17, 2003

Logical Network Design

1. Applications:Office XP Pro

Research tracking softwareInternet ExplorerOutlook

2. Local Resources:Dot metrix printer for recording

research3. Network resources:

Login to server, use of server based tracking applications4. Security:

User Account Login5. OS

Microsoft Windows XP Pro6. Quantity

Number of PCs - 3

1. Applications:Office XP Pro

Scheduling softwareInternet ExplorerOutlook

2. Local Resources:Dot metrix printer for recording

data and information3. Network resources:

Login alllowed at server, access to discretionary disk space access.4. Security:

User Account Login Administrator can log in5. OS

Microsoft Windows XP Pro6. Quantity

Number of PCs - 8

1. Applications:File Services

Print Services Directory Services

2. Local Resources:Disk space

3. Network resources:This console is limited to

administrators Users have varying security levels per user.4. Security:

User Account Login5. OS

Novel Internetware 5.226. Quantity: 1 Server

Modeling: Physical network diagram

Internet

Sever 2

Sever 1

RouterSwitch (each port is a seperate segment in this network)

Shared media Hub 1(segment 1)

Shared media Hub 2(segment 2)

Dale

Pete

RobiSandy

Jenny

Uses dedicatedswitch port

Uses dedicatedswitch port

Uses dedicatedswitch port Uses dedicated

switch port

Uses dedicatedswitch port

Uses dedicatedswitch port

Uses port on sharedhub plugged into switch

Uses dedicatedswitch port

Physical Network Diagram

Firewall

Hardware: What do I need? Computers NIC Cabling (connection) Wireless Router (Special computer that messages when several networks

are connected together) Hub (used to connect segments of a network)

Bridge (interface used to connect the same type of networks) Gateway ( allows communication between dissimilar networks)

Server ?

Connections

Infrared transmission - the transmission of data signals using infrared-light waves

Communications satellites - microwave relay stations in orbit around the earth

Geostationary earth orbat (GEO): 22K miles up and always above the equator.

Medium earth orbat (MEO): 5k to 10k miles up

Low earth orbit (LEO): 400 to 1000 miles up

What protocols should I use?

Protocols: set of rules PPPoE: Point-to-Point Protocol over Ethernet. PPPoE relies on two widely accepted standards: PPP and Ethernet. PPPoE is a specification for connecting the users on an Ethernet to the Internet through a common broadband medium

Protocols continued:

MTU: Maximum Transmission Unit, the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent.

802.3 NAT (Network Address Translation ) TCP and UDP (Transmission Control

Protocol & User Datagram Protocol)

Network OS: what do they do? An operating system that includes special functions for

connecting computers and devices into a local-area network (LAN).

Some operating systems, such as UNIX and the Mac OS, have networking functions built in.

The term network operating system, however, is generally reserved for system software that enhances a basic operating system by adding networking features.

For example, some popular NOS's for DOS and Windows systems include Novell Netware, Artisoft's LANtastic, Microsoft LAN Manager, and Windows NT.

Average Cost of a home network:

$160.00 to $500.00