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SOHO Networking. Caskey L. Dickson LA-ACM April, 2006. Overview. What are they? Why have them? How do you make them? Who makes the technology?. What are they?. SOHO - Small Office Home Office Myriad of connected/smart devices. SOHO. Few users Few devices Light loads

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Soho networking l.jpg

SOHO Networking

Caskey L. Dickson

LA-ACM

April, 2006


Overview l.jpg
Overview

  • What are they?

  • Why have them?

  • How do you make them?

  • Who makes the technology?

LA ACM Talk, SOHO Networking


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What are they?

  • SOHO - Small Office Home Office

  • Myriad of connected/smart devices

LA ACM Talk, SOHO Networking


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SOHO

  • Few users

  • Few devices

  • Light loads

  • Ease of use vs. security

  • Unmanaged

LA ACM Talk, SOHO Networking


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Smart Devices

  • Computers

  • Printers

  • HTPCs/Home Theater PCs

  • Video game consoles

    • XBox

    • PS2

  • Appliances

    • Whirlpool & LG

    • Internet Fridge, Oven, Washing Machine, Air Conditioner

  • Home Automation

  • Cars

LA ACM Talk, SOHO Networking


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Why have them?

  • Connectivity

  • Economy

  • Ease of use

  • Luxury

LA ACM Talk, SOHO Networking


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Connectivity

  • “Work anywhere”

  • Facilitate communication

  • Share/transfer data

LA ACM Talk, SOHO Networking


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Economy

  • Energy savings

    • Smart air conditioners

    • Smart lighting

  • Fuel savings

    • Fewer commutes

    • Less errands

  • Money savings

    • Better home economics

    • Security/monitoring

LA ACM Talk, SOHO Networking


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Ease of Use

  • Smart kitchen, integrated appliances

  • Configurability

  • “Calling the hot tub”

LA ACM Talk, SOHO Networking


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Luxury

  • Shallow prestige

  • “Cool” technology

  • and so on.

LA ACM Talk, SOHO Networking


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Networking

“WiFi” 802.11a/b/g

Ethernet

X10

Power-networks

Connectivity

“Modems”/Dialup

aDSL/sDSL

Cable Modem

Satellite

Equipment

Linksys

Cisco

Apple

D-Link

Belkin

Providers

Telcos

ISPs

TV Companies

Technologies

LA ACM Talk, SOHO Networking


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Networking 101

  • Networking is easy

  • Five basic concepts

    • Networks

    • Hosts

    • Routers

    • Bridges

    • Inter-networks --> The Internet

LA ACM Talk, SOHO Networking


Network l.jpg
Network

  • Collection of hosts

  • Direct communication

  • Examples:

    • Local Area Networks (Ethernet, WiFi, Token-Ring)

    • USB: The Universal Serial Bus

    • Firewire/IEEE1384

LA ACM Talk, SOHO Networking


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Host

  • Device on a network

  • Unique address

  • Capable of sending and/or receiving data

  • Examples:

    • Workstations/Computers

    • Printers

    • NAS/Network Attached Storage

    • Sensors

    • Routers

LA ACM Talk, SOHO Networking


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Router

  • Host

  • Connected to multiple networks

  • Selectively forwards data

  • Examples:

    • “Routers”

    • WiFi Access Points

    • NAT Boxes

LA ACM Talk, SOHO Networking


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Bridge

  • Device on two network

  • Not always a host

  • Indiscriminately forwards data

  • Effectively creates a larger virtual network

  • Examples:

    • WiFi Access Points

LA ACM Talk, SOHO Networking


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Inter-network

  • Multiple networks

  • Connected via routers

  • Inherently distributed

  • internet

LA ACM Talk, SOHO Networking


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The Internet

  • Worldwide network of networks

  • Single standard protocol

  • “The” Internet Protocol

    • IPv4

    • IPv6

LA ACM Talk, SOHO Networking


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Connecting the pieces

  • Three basic ways

  • Remote Node

  • Routed Local Network

  • Multiple Local Networks

LA ACM Talk, SOHO Networking


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1: Remote Node Networks

  • Most basic connectivity

  • Modem connects a single host to a bigger network

  • Host is a distant, slow member of the larger network

LA ACM Talk, SOHO Networking


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2: Routed Local Network

  • System with router becomes a router

  • Local hosts use the router to communicate externally

  • ...an inter-network

LA ACM Talk, SOHO Networking


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3: Multiple Local Networks

  • More than one network

  • Router belongs to three networks

  • Often wired and wireless

LA ACM Talk, SOHO Networking


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Building a SOHO LAN

  • Connectivity

  • Hosts

  • Networks

  • Routers

LA ACM Talk, SOHO Networking


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Connectivity

  • Dial Up

  • DSL

  • Cable Modem

  • Satellite

  • Leased Line

LA ACM Talk, SOHO Networking


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Dial Up

  • Lowest cost

  • Slow

  • High Latency

  • Best for Type 1

  • Often subsidized

LA ACM Talk, SOHO Networking


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DSL

  • Moderate cost

    • Typical: $50

    • Maximum: $300+

    • Minimum: $30

  • High Speed

    • Low: 128Kbps

    • High: 6Mbps

  • Low Latency: about 10ms

  • Distance: 6000M limit

  • Asymmetric

  • Many pricing options

  • Regulatory issues

LA ACM Talk, SOHO Networking


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Cable Modem

  • Moderate Cost

    • Similar to DSL

    • Bundling of services

  • High Speed

    • Low: about 2Mbps

    • High: 10Mbps

  • Shared medium

  • Limited choice

  • Very restrictive service agreements

LA ACM Talk, SOHO Networking


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Satellite

  • Few geographic restrictions

  • Dual and single mode

  • VERY expensive

  • Variable data rates

  • High latency

LA ACM Talk, SOHO Networking


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Leased Line

  • Expensive

  • High quality

  • Many options

  • Service level agreements

  • Guaranteed bandwidth

  • Probably beyond SOHO’s needs

  • Borderline Enterprise

LA ACM Talk, SOHO Networking


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Hosts

  • What are you connecting?

  • Where are they located?

  • What are their needs?

LA ACM Talk, SOHO Networking


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What?

  • Computers/Workstations

  • Laptops

  • HTPCs

LA ACM Talk, SOHO Networking


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Where?

  • Point of Entry

  • Wired issues

    • Long cable runs

    • Access to wiring

  • Wireless issues

    • Distance and obstacles

LA ACM Talk, SOHO Networking


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Networks

  • Wired?

  • Wireless?

  • Both?

  • Security!

LA ACM Talk, SOHO Networking


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Wired

  • 100M cable run limits

  • Avoid coils

  • Purchased cables

    • Never quite right

    • Standard lengths

    • Reliable

  • Home-made

    • Always right fit

    • Need to test

    • Dexterity requirement

LA ACM Talk, SOHO Networking


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Wireless

  • Standards

    • 802.11b 11Mbps

    • 802.11g 54Mbps

  • Vendor extensions

    • MIMO

    • X-speed

    • etc.

LA ACM Talk, SOHO Networking


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Security

  • Defense in-depth

  • Anti Virus

  • Firewalls

  • Network Security

  • Updates

LA ACM Talk, SOHO Networking


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Anti-Virus

  • Any vendor will do

  • Subscription based

  • Keep it updated

LA ACM Talk, SOHO Networking


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Firewalls

  • Software

    • Run on the hosts

    • Won’t protect other hosts

    • Can operate on routers

  • Hardware

    • Custom devices

    • Built into routers (sometimes)

  • NAT is not Firewalling

LA ACM Talk, SOHO Networking


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Network Security

  • Wired networks-automatic

  • Wireless

    • WEP (poor choice)

    • WPA (better, not perfect)

  • Standards!

LA ACM Talk, SOHO Networking


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Updates

  • Update

  • Update

  • Update

LA ACM Talk, SOHO Networking


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Routers

  • All in one devices

    • Wired

    • Wireless

    • Modem

    • Router

    • Firewall

    • Nat

LA ACM Talk, SOHO Networking


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Fool Proof

  • Single Vendor

  • Vendor Guides

  • Expensive

  • Single-Source

LA ACM Talk, SOHO Networking


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Fin.

Thank You


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