3Com 3CRWDR300A-73 Router Manual PDF (Setup & Configuration Guide)

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Wireless Settings

59

6

Select whether your Router will operate in 11b mode only, 11g mode

only, 11n mode only, or mixed mode from the

Wireless Mode

drop-down

menu. If your network contains 11b, 11g, and 11n clients, select the

mixed mode. If your network contains just one type of clients only, select

11b only, or 11g only, or 11n only, depending on your wireless network

environment. Note that selecting one type of wireless network only will

improve the performance, however, this will prevent clients of other type

from connecting to the Router.

7

Bandwidth: select the bandwidth to use. Select 20/40 MHz when your

wireless mode is 802.11n or 11n with 11b, 11 g mixed mode. If your

wireless network is purely 11b only or 11g only, or 11b and 11g mixed,

select 20 MHz.

8

Select to turn on/off the

Protected Mode

function. As part of the

802.11g & 802.11n specification, Protected mode ensures proper

operation of 802.11g & 802.11n clients and access points when there is

heavy 802.11b traffic in the operating environment. When protected

mode is ON, 802.11g & 802.11n scans for other wireless network traffic

before it transmits data. Therefore, using this mode in environments with

HEAVY 802.11b traffic or interference achieves best performance results.

If you are in an environment with very little, or no other wireless network

traffic, your best performance will be achieved with Protected mode

OFF

.

9

Click

Apply

.

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Page 62 / 182

60

C

HAPTER

5: C

ONFIGURING

THE

R

OUTER

Encryption

This feature prevents any non-authorized party from reading or changing

your data over the wireless network.

Figure 45

Encryption Screen

Select the wireless security mode that you want to use from the

drop-down menu, and click

Apply

. There are five selections:

■

Disabled

■

64-bit WEP (see

page 61

)

■

128-bit WEP (see

page 62

)

■

WPA-PSK (no server): this option includes both WPA and WPA2

(see

page 63

)

■

WPA (with RADIUS Server): this option includes both WPA and WPA2

(see

page 64

)

Disabled

In this mode, wireless transmissions will not be encrypted, and will be

visible to everyone. However, when setting up or debugging wireless

networks, it is often useful to use this security mode.

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Page 63 / 182

Wireless Settings

61

64-bit WEP

WEP is the basic mechanism to transmit your data securely over the

wireless network. Matching encryption keys must be setup on your

Router and wireless client devices to use WEP. Note that 3Com

recommends using WPA/WPA2 to secure your wireless connection.

Figure 46

64-bit WEP Screen

To setup 64-bit WEP:

1

You can enter the 64-bit WEP key manually:

■

enter the WEP key as 5 pairs of hex digits (0-9, A-F).

Or you can generate the 64-bit WEP key automatically:

■

enter a memorable passphrase in the

Passphrase

field, and then

click

Generate

to generate the hex keys from the passphrase.

For 64-bit WEP, you can enter up to four keys, in the fields

Key 1

to

Key 4

.

The radio button on the left hand side selects the key that is used in

transmitting data.

Note that all four WEP keys on each device in the wireless network must

be identical.

2

Click

Apply

.

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62

C

HAPTER

5: C

ONFIGURING

THE

R

OUTER

128-bit WEP

WEP is the basic mechanism to transmit your data securely over the

wireless network. Matching encryption keys must be set up on your

Router and wireless client devices to use WEP. Note that 3Com

recommends using WPA/WPA2 to secure your wireless connection.

Figure 47

128-bit WEP Screen

To setup 128-bit WEP:

1

You can enter the 128-bit WEP key manually:

■

enter your WEP key as 13 pairs of hex digits (0-9, A-F).

Or you can generate the 128-bit WEP key automatically:

■

enter a memorable passphrase in the

Passphrase

field, and then

click

Generate

to generate the hex keys from the passphrase.

The WEP keys on each device on the wireless network must be identical.

In 128-bit WEP mode, only one WEP key can be specified.

2

Click

Apply

.

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Wireless Settings

63

WPA-PSK (no server)

WPA (Wi-Fi Protected Access) provides dynamic key changes and

constitutes the best security solution. If your network does not have a

RADIUS server. Select the no server option. For home network or very

small business networking environment, PSK is typically used.

Figure 48

WPA-PSK (no server) Screen

1

Select WPA-PSK (no server) from the

WPA

drop-down menu.

2

Select WPA mode from the drop-down menu, three modes are

supported: WPA, WPA2, and Mixed mode.

3

Select

Encryption technique

from the drop-down menu, four options are

available: TKIP, AES, Auto for WPA AES for WPA2, and AES for both WPA

and WPA2.

WPA supports TKIP and AES Encryption technique, for some old module

of wireless client cards, they may only support TKIP. In this case, we

suggest you to select “AUTO for WPA, AES for WPA2”. If your wireless

client cards can support AES over WPA, we suggest you directly select

“AES for both WPA and WPA2”.

4

Enter the pre-shared key in the

Pre-shared Key (PSK)

field. The pre-shared

key is a password, in the form of a word, phrase or series of letters and

numbers. The key must be between 8 and 63 characters long and can

include spaces and symbols. Each client that connects to the network

must use the same key.

5

If you want the key that you enter to be shown on the screen as a series

of asterisks (*), then check the

Hide PSK

checkbox.

6

Click

Apply

.

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