D-Link DSL-2640U User Manual download pdf (Page 17)

Wireless – Security

The next screen is the Wireless – Security screen which allows you to select the

network authentication method and to enable or disable WEP encryption. Note

that depending on the network authentication that is selected, the screen will

change accordingly so additional fields can be configured for the specific

authentication method.

Network authentication methods include the following—

• Open—anyone can access the network. The default is a disabled WEP

encryption setting.

• Shared—WEP encryption is enabled and encryption key strength of 64-bit or

128-bit needs to be selected. Click on Set Encryption Keys to manually set

the network encryption keys. Up to 4 different keys can be set and you can

come back to select which one to use at anytime.

• 802.1X—requires mutual authentication between a client station and the

router by including a RADIUS-based authentication server. Information

about the RADIUS server such as its IP address, port and key must be

entered. WEP encryption is also enabled and the encryption strength must

also be selected.

• WPA—(Wi-Fi Protected Access)— usually used for the larger Enterprise

environment, it uses a RADIUS server and TKIP (Temporal Key Integrity

Protocol) encryption (instead of WEP encryption which is disabled). TKIP

uses128-bit dynamic session keys (per user, per session, and per packet

keys).

• WPA-PSK (Wi-Fi Protected Access – Pre-Shared Key)—WPA for home and

SOHO environments also using the same strong TKIP encryption, per-packet

key construction, and key management that WPA provides in the enterprise

environment. The main difference is that the password is entered manually.

A group re-key interval time is also required.

• WPA2 (Wi-Fi Protected Access 2)—second generation of WPA which uses

AES (Advanced Encryption Standard) instead of TKIP as its encryption

method. Network re-auth interval is the time in which another key needs

to be dynamically issued.

• WPA2-PSK (Wi-Fi Protected Access 2 – Pre-Shared Key)—suitable for home

and SOHO environments, it also uses AES encryption and requires you to

enter a password and an re-key interval time.

• Mixed WPA2 / WPA—during transitional times for upgrades in the

enterprise environment, this mixed authentication method allows

“upgraded” and users not yet “upgraded” to access the network via the

router. RADIUS server information must be entered for WPA and a as well

as a group re-key interval time. Both TKIP and AES are used.

• Mixed WPA2 / WPA-

PSK—useful during transitional times for upgrades in

the home or SOHO environment, a pre-shared key must be entered along

with the group re-key interval time. Both TKIP and AES are also used.

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D-Link DSL-2640U User Manual Page 17

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