58D-Link DIR-635 User Manual
Section 4 - Security
Wireless Security
This section will show you the different levels of security you can use to protect your data from intruders. The 
DIR-635 offers the following types of security:
• WPA2 (Wi-Fi Protected Access 2)     • WPA2-PSK (Pre-Shared Key)
• WPA (Wi-Fi Protected Access)      • WPA-PSK (Pre-Shared Key)
• WEP (Wired Equivalent Privacy)
What is WEP?
WEP stands  for Wired Equivalent Privacy. It is based  on the IEEE 802.11  standard and uses the  RC4 encryption 
algorithm. WEP provides security by encrypting data over your wireless network so that it is protected as it is transmitted 
from one wireless device to another.
To gain access to a WEP network, you must know the key. The key is a string of characters that you create. When using 
WEP, you must determine the level of encryption. The type of encryption determines the key length. 128-bit encryption 
requires a longer key than 64-bit encryption. Keys are defined by entering in a string in HEX (hexadecimal - using 
characters 0-9, A-F) or ASCII (American Standard Code for Information Interchange – alphanumeric characters) format. 
ASCII format is provided so you can enter a string that is easier to remember. The ASCII string is converted to HEX 
for use over the network. Four keys can be defined so that you can change keys easily.