Proxicast LAN-Cell 2 User's Guide download pdf (Page 164)

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Chapter 8 Wi-Fi Screens

LAN-Cell 2 User’s Guide

164

You can use the MAC address filter to tell the AP which wireless clients are allowed or not

allowed to use the wireless network. If a wireless client is allowed to use the wireless network,

it still has to have the correct settings (SSID, channel, and security). If a wireless client is not

allowed to use the wireless network, it does not matter if it has the correct settings.

This type of security does not protect the information that is sent in the wireless network.

Furthermore, there are ways for unauthorized devices to get the MAC address of an authorized

wireless client. Then, they can use that MAC address to use the wireless network.

User Authentication

You can make every user log in to the wireless network before they can use it. This is called

user authentication. However, every wireless client in the wireless network has to support

IEEE 802.1x to do this.

For wireless networks, there are two typical places to store the user names and passwords for

each user.

• In the AP: this feature is called a local user database or a local database.

• In a RADIUS server: this is a server used in businesses more than in homes.

If your AP does not provide a local user database and if you do not have a RADIUS server,

you cannot set up user names and passwords for your users.

Unauthorized devices can still see the information that is sent in the wireless network, even if

they cannot use the wireless network. Furthermore, there are ways for unauthorized wireless

users to get a valid user name and password. Then, they can use that user name and password

to use the wireless network.

Local user databases also have an additional limitation that is explained in the next section.

Encryption

Wireless networks can use encryption to protect the information that is sent in the wireless

network. Encryption is like a secret code. If you do not know the secret code, you cannot

understand the message.

4. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless

networks. These kinds of wireless devices might not have MAC addresses.

5. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.

1 2 ... 159 160 161 162 163 164 165 166 167 168 169 ... 649 650

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