Wireless networking

Unit objective: Identify wireless networking standards,

and install a SOHO network

Topic A

Topic A: Wireless networking standards

Topic B: Wireless SOHO networking

Major wireless standardsStandard Speeds Frequency Indoor

distanceOutdoor distance

Interference

802.11b <= 11 Mbps

2.4 GHz 50 m 300 m Yes

802.11a <= 54 Mbps

5 GHz 15 m 30 m No; Not compatible with 802.11b

802.11g 20+ Mbps

Ad. to 54 Mbps

2.4 GHz 45 m 90 m Yes; Compatible with 802.11b

802.11n <= 600 Mbps

2.4 or 5 GHz

70 m 250 m No; Compatible with 802.11g, b, & a

Bluetooth

A standard for short-range wireless communication and data synchronization between devices

Transmitters and receivers are application-specific integrated circuits (ASICs)

Rates in excess of 1 Mbps Up to three voice channels available 2.4-GHz frequency range 10 meters range

Transmission encryption

WEP WPA WPA2

Topic B

Topic A: Wireless networking standards

Topic B: Wireless SOHO networking

Purposes of a plan

Verify that all business requirements will be met

Verify that all technical requirements will be met

Create a roadmap for network implementation

Document the network design for future use

Creating a plan

1. Determine business requirements

2. Review the current infrastructure

3. Review new and existing technologies

4. Determine the appropriate infrastructure requirements

5. Document the design

6. Review the documentation with the appropriate personnel

Ongoing planning

Plans evolve New technologies emerge

Implementing a plan

1. Purchase equipment

2. Install network media

3. Connect your networking devices

4. Connect your computers

Wireless LAN components

Wireless NICs Wireless access points

Firewalls

Controls traffic Blocks or permits traffic based on

rules

NAT

Correlates internal and external addresses

Protects internal devices Reasons for NAT

– Availability of addresses– Security

Port address translation

NAT services using port numbers Port triggering

Security zones

Intranet Perimeter DMZs

Configuration options

Encryption Firmware updates Change default administrator accounts Change default SSID Disable SSID Disable DHCP MAC filtering WPS QoS

Configuring wireless clients

Windows Zero Configuration Options 802.1X

Unit summary

Identified wireless networking standards, and installed a SOHO network