64

Appendix B: Wireless Security

What Are The Risks?

Wireless-B Internet Video Camera

The solution, then, is to segment your network up into multiple groups. If your network had 80 users and you

used four WEP keys, a hacker would have access to only ¼ of your wireless network resources. In this way,

multiple keys reduce your liability.

Finally, be sure to change your WEP key regularly, once a week or once a day. Using a “dynamic” WEP key, rather

than one that is static, makes it even harder for a hacker to break into your network and steal your resources.

WEP Encryption

There are two ways to enable WEP encryption for the Camera. The first way is through the Setup Wizard, and the

second way is through the Web-based Utility. To use the Setup Wizard, refer to “Chapter 5: Setting up and

Mounting the Wireless-B Internet Video Camera.” To use the Web-based Utility, follow these instructions:

1.

Click the

Setup

tab of the Web-based Utility.

2.

On the

Basic

screen, click

Enable

next to WEP.

3.

Click the

Edit WEP Settings

button.

4.

The

WEP Key Settings

screen will appear. See Figure B-2.

5.

Select the Default Transmit Key used by your wireless network.

6.

From the

WEP Encryption

drop-down menu, select

64 Bit Keys (10 Hex chars)

or

128 Bit Keys (26 Hex

chars)

, depending on the level of encryption your wireless network uses.

7.

Enter a Passphrase in the

Passphrase

field, and click the

Generate

button to create WEP key(s). The

Passphrase is case-sensitive and should have 16 alphanumeric characters or fewer.

If you do not want to use a Passphrase, then enter the WEP keys manually in the

Key 1

to

Key 4

fields. Each

WEP key must consist of valid hexadecimal characters, the letters “A” through “F” and numbers “0” through

“9”. For 64-bit WEP encryption, the key must consist of exactly 10 hexadecimal characters. For 128-bit WEP

encryption, the key must consist of exactly 26 hexadecimal characters.

8.

From the

Authentication

drop-down menu, select your wireless network’s authentication type,

Open System

or

Shared Key

. The default is set to Open System, for which the sender and recipient do NOT use a WEP key

for authentication. You can also choose Shared Key, when the sender and recipient use a WEP key for

authentication. This setting should match the one on your network’s access point or wireless router.

9.

Click the

Apply

button to save your changes.

Important:

Always remember that each

device in your wireless network MUST use

the same WEP encryption method and

encryption key or your wireless network will

not function properly.

Figure B-2: WEP Key Settings

Downloaded from

www.Manualslib.com

manuals search engine

65

Appendix C: Upgrading Firmware

Wireless-B Internet Video Camera

Appendix C: Upgrading Firmware

The Camera's firmware is upgraded through the Web-based Utility's Help tab. Follow these instructions:

1.

Download the firmware from Linksys’s website at

www.linksys.com

. Then extract the file.

2.

Access the Camera’s Web-based Utility, and click the

Help

tab.

3.

On the

Help

screen, click the

Firmware Upgrade

button.

4.

You will see the screen shown in Figure C-1. Click the

Browse

button to find the extracted file, and then

double-click the filename.

5.

Click the

Start Upgrade

button, and follow the on-screen instructions. Click the

Cancel

button to cancel the

firmware upgrade. For more information, click the

Help

button.

Figure C-1: Upgrade Firmware

Note:

Linksys recommends that you upgrade the Camera’s firmware within your network; in other

words, use a computer within the Camera’s local network. If you attempt to upgrade the Camera’s

firmware from a remote location—using a computer outside of the Camera’s local network—the

upgrade will fail.

Downloaded from

www.Manualslib.com

manuals search engine

66

Appendix D: Windows Help

Wireless-B Internet Video Camera

Appendix D: Windows Help

All wireless products require Microsoft Windows. Windows is the most used operating system in the world and

comes with many features that help make networking easier. These features can be accessed through Windows

Help and are described in this appendix.

TCP/IP

Before a computer can communicate with an access point or router, TCP/IP must be enabled. TCP/IP is a set of

instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well.

Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides

complete instructions on enabling TCP/IP.

Shared Resources

If you wish to share printers, folders, or files over your network, Windows Help provides complete instructions on

using shared resources.

Network Neighborhood/My Network Places

Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the

version of Windows you’re running). Windows Help provides complete instructions on adding PCs to your

network.

Downloaded from

www.Manualslib.com

manuals search engine

67

Appendix E: Glossary

Wireless-B Internet Video Camera

Appendix E: Glossary

802.11a

- An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps and an

operating frequency of 5GHz.

802.11b

- An IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an

operating frequency of 2.4GHz.

802.11g

- An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an

operating frequency of 2.4GHz, and backward compatibility with 802.11b devices.

Access Point

- Device that allows wireless-equipped computers and other devices to communicate with a wired

network. Also used to expand the range of a wireless network.

Adapter

- This is a device that adds network functionality to your PC.

Ad-hoc

- A group of wireless devices communicating directly with each other (peer-to-peer) without the use of

an access point.

Backbone

- The part of a network that connects most of the systems and networks together, and handles the

most data.

Bandwidth

- The transmission capacity of a given device or network.

Beacon Interval

- The frequency interval of the beacon, which is a packet broadcast by a router to synchronize a

wireless network.

Bit

- A binary digit.

Boot

- To start a device and cause it to start executing instructions.

Bridge

- A device that connects two different kinds of local networks, such as a wireless network to a wired

Ethernet network.

Broadband

- An always-on, fast Internet connection.

Browser

- A browser is an application program that provides a way to look at and interact with all the

information on the World Wide Web.

Downloaded from

www.Manualslib.com

manuals search engine

68

Appendix E: Glossary

Wireless-B Internet Video Camera

Buffer

- A block of memory that temporarily holds data to be worked on later when a device is currently too busy

to accept the data.

Cable Modem

- A device that connects a computer to the cable television network, which in turn connects to the

Internet.

CSMA/CA

(Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer that is used to prevent

data loss in a network.

CTS

(Clear To Send) - A signal sent by a device to indicate that it is ready to receive data.

Daisy Chain

- A method used to connect devices in a series, one after the other.

Database

- A collection of data that is organized so that its contents can easily be accessed, managed, and

updated.

DDNS

(Dynamic Domain Name System) - The capability of having a website, FTP, or e-mail server-with a

dynamic IP address-use a fixed domain name.

Default Gateway

- A device that forwards Internet traffic from your local area network.

DHCP

(Dynamic Host Configuration Protocol) - A protocol that lets one device on a local network, known as a

DHCP server, assign temporary IP addresses to the other network devices, typically computers.

DMZ

(Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be “seen” from

the Internet.

DNS

(Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP

addresses.

Domain

- A specific name for a network of computers.

Download

- To receive a file transmitted over a network.

DSL

(Digital Subscriber Line) - An always-on broadband connection over traditional phone lines.

DSSS

(Direct-Sequence Spread-Spectrum) - A type of radio transmission technology that includes a redundant

bit pattern to lessen the probability of data lost during transmission. Used in 802.11b networking.

DTIM

(Delivery Traffic Indication Message) - A message included in data packets that can increase wireless

efficiency.

Downloaded from

www.Manualslib.com

manuals search engine