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Types of Encryption and Authentication for WiFi Routers

Sunday, August 18, 2013 Posted by Glenn Von Posadas

Authentication

Open
With this setting enabled the AirStation does not require wireless LAN clients to authenticate. Anyone can connect to your wireless network.

WPA-PSK
Clients are authenticated in accordance with WPA (Wi-Fi Protected Access). A password ("PSK passphrase") is required to log into the wireless network.

WPA2-PSK
Clients are authenticated in accordance with WPA2 (IEEE802.11i). A password ("PSK passphrase") is required to log into the wireless network.

WPA/WPA2 mixedmode - PSK
This setting allows the authentication of WPA-PSK and WPA2-PSK clients at the same time. A password ("PSK passphrase") is required to log into the wireless network.


Encryption
Specify whether to encrypt wireless signals or not. If the different encryption types are used on the AirStation and the wireless client, they will not be able to communicate.

Open
The wireless signal is not encrypted. Because the contents of your communication may be intercepted, this choice is not recommended.
WEP
Encrypt wireless signal with WEP. WEP is a basic encryption standard for wireless LANs.
A WEP encryption key must be entered.
TKIP
TKIP is a more secure encryption than WEP. It is also slower. Wireless clients will need to support TKIP.
A WPA-PSK (Pre-shared key) must be entered.
AES
AES is even more secure than TKIP and faster than WEP. Highly recommended if your client devices support it.
A WPA-PSK (Pre-shared key) must be entered.
TKIP/AES mixedmode
The Mode supporting both TKIP and AES, can be selected only if [WPA/WPA2 mixedmode] is selected as Authentication.
"WPA-PSK (Pre-shared key)" must be inputted.


WEP Encryption Key
Enter WEP encryption key. The same encryption key must be entered into both the AirStation and the client device or there will be no communication between them.

Specifying the Encryption Method

There are two encryption key lengths (WEP64 and WEP128) for WEP. Effective bit length for encryption key is 40 bit in WEP64 and 104 bit in WEP128. Keys may be entered as either Hex or ASCII, for a total of 4 different ways of entering WEP keys. Default value of input method is "Character input,13 characters (WEP128)". When the input method is changed, encryption key values are cleared.
Character input, 5 character (WEP64)
Enter 5 (case sensitive) alphanumeric characters. Because a 5 character password is easy to crack, this type of key is not recommended.
Character input, 13 characters (WEP128)
Enter 13 (case sensitive) alphanumeric characters.
Hexadecimal number input, 10 digit (WEP64)
Enter a 10 digit HEX as an encryption key. You may use characters 0-9 and a-f. Because a 10 digit password is easy to crack, this type of key is not recommended.
Hexadecimal number input, 26 digit (WEP128)
Enter a 26 digit HEX as an encryption key. You may use characters 0-9 and a-f.

Specifying common keys for sending and receiving

Up to 4 encryption keys can be specified and one of them can be used for both encryption and decryption. (The others are only for decryption). You can select which is the common key for sending and receiving. Click the circle next to the input box of encryption key. Default common key for sending and receiving will be listed first after [Apply] is clicked.

Note
If a wireless LAN device doesn't support multiple encryption keys, it must be set to the common key for sending and receiving (the first key in the AirStation's list).

Key

The default value of the encryption key is blank. When you specify just one (or two, or three) encryption key(s), enter it into to just the 1st (or 1st and 2nd, or 1st, 2nd, and 3rd) box(es) and leave the other boxes blank.

WPA-PSK (Pre-Shared Key)
When TKIP or AES is used as encryption method, a WPA-PSK pre-shared key must be entered. If the same key is not entered into the AirStation and the wireless client, communication will not be established. Specify 8-63 alphanumeric characters or a 64 digit HEX. The default value is blank.

Rekey interval
When using TKIP or AES encryption, the encryption key is changed each "Key Renewal Period". This period can be configured from 0 to 1440 minutes. If 0 is set, the encryption key is not renewed. Default value is 60 minutes.



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glenn von

Author: Glenn Posadas

20 year old 5th year Computer Engineering Student, a blogger, photographer, programmer, and an electronics hobbyist; a Christian who loves God very much..

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