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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

SOHO Networking

Caskey L. Dickson

LA-ACM

April, 2006

overview
Overview
  • What are they?
  • Why have them?
  • How do you make them?
  • Who makes the technology?

LA ACM Talk, SOHO Networking

what are they
What are they?
  • SOHO - Small Office Home Office
  • Myriad of connected/smart devices

LA ACM Talk, SOHO Networking

slide4
SOHO
  • Few users
  • Few devices
  • Light loads
  • Ease of use vs. security
  • Unmanaged

LA ACM Talk, SOHO Networking

smart devices
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

why have them
Why have them?
  • Connectivity
  • Economy
  • Ease of use
  • Luxury

LA ACM Talk, SOHO Networking

connectivity
Connectivity
  • “Work anywhere”
  • Facilitate communication
  • Share/transfer data

LA ACM Talk, SOHO Networking

economy
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

ease of use
Ease of Use
  • Smart kitchen, integrated appliances
  • Configurability
  • “Calling the hot tub”

LA ACM Talk, SOHO Networking

luxury
Luxury
  • Shallow prestige
  • “Cool” technology
  • and so on.

LA ACM Talk, SOHO Networking

technologies
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

networking 101
Networking 101
  • Networking is easy
  • Five basic concepts
    • Networks
    • Hosts
    • Routers
    • Bridges
    • Inter-networks --> The Internet

LA ACM Talk, SOHO Networking

network
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

slide14
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

router
Router
  • Host
  • Connected to multiple networks
  • Selectively forwards data
  • Examples:
    • “Routers”
    • WiFi Access Points
    • NAT Boxes

LA ACM Talk, SOHO Networking

bridge
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

inter network
Inter-network
  • Multiple networks
  • Connected via routers
  • Inherently distributed
  • internet

LA ACM Talk, SOHO Networking

the internet
The Internet
  • Worldwide network of networks
  • Single standard protocol
  • “The” Internet Protocol
    • IPv4
    • IPv6

LA ACM Talk, SOHO Networking

connecting the pieces
Connecting the pieces
  • Three basic ways
  • Remote Node
  • Routed Local Network
  • Multiple Local Networks

LA ACM Talk, SOHO Networking

1 remote node networks
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

2 routed local network
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

3 multiple local networks
3: Multiple Local Networks
  • More than one network
  • Router belongs to three networks
  • Often wired and wireless

LA ACM Talk, SOHO Networking

building a soho lan
Building a SOHO LAN
  • Connectivity
  • Hosts
  • Networks
  • Routers

LA ACM Talk, SOHO Networking

connectivity24
Connectivity
  • Dial Up
  • DSL
  • Cable Modem
  • Satellite
  • Leased Line

LA ACM Talk, SOHO Networking

dial up
Dial Up
  • Lowest cost
  • Slow
  • High Latency
  • Best for Type 1
  • Often subsidized

LA ACM Talk, SOHO Networking

slide26
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

cable modem
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

satellite
Satellite
  • Few geographic restrictions
  • Dual and single mode
  • VERY expensive
  • Variable data rates
  • High latency

LA ACM Talk, SOHO Networking

leased line
Leased Line
  • Expensive
  • High quality
  • Many options
  • Service level agreements
  • Guaranteed bandwidth
  • Probably beyond SOHO’s needs
  • Borderline Enterprise

LA ACM Talk, SOHO Networking

hosts
Hosts
  • What are you connecting?
  • Where are they located?
  • What are their needs?

LA ACM Talk, SOHO Networking

slide31
What?
  • Computers/Workstations
  • Laptops
  • HTPCs

LA ACM Talk, SOHO Networking

where
Where?
  • Point of Entry
  • Wired issues
    • Long cable runs
    • Access to wiring
  • Wireless issues
    • Distance and obstacles

LA ACM Talk, SOHO Networking

networks
Networks
  • Wired?
  • Wireless?
  • Both?
  • Security!

LA ACM Talk, SOHO Networking

wired
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

wireless
Wireless
  • Standards
    • 802.11b 11Mbps
    • 802.11g 54Mbps
  • Vendor extensions
    • MIMO
    • X-speed
    • etc.

LA ACM Talk, SOHO Networking

security
Security
  • Defense in-depth
  • Anti Virus
  • Firewalls
  • Network Security
  • Updates

LA ACM Talk, SOHO Networking

anti virus
Anti-Virus
  • Any vendor will do
  • Subscription based
  • Keep it updated

LA ACM Talk, SOHO Networking

firewalls
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

network security
Network Security
  • Wired networks-automatic
  • Wireless
    • WEP (poor choice)
    • WPA (better, not perfect)
  • Standards!

LA ACM Talk, SOHO Networking

updates
Updates
  • Update
  • Update
  • Update

LA ACM Talk, SOHO Networking

routers
Routers
  • All in one devices
    • Wired
    • Wireless
    • Modem
    • Router
    • Firewall
    • Nat

LA ACM Talk, SOHO Networking

fool proof
Fool Proof
  • Single Vendor
  • Vendor Guides
  • Expensive
  • Single-Source

LA ACM Talk, SOHO Networking

slide43

Fin.

Thank You

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