Lantronix EMG 8500 EMG User Guide - Page 105

7: Networking Security Suite Select the security suite used by the profile: None: Select this to connect to a WLAN network with no security, e.g. an open network that does not require a security token or password. WEP: Select this to connect to a WLAN network that uses Wired Equivalent Privacy security. WEP is a simple and efficient security mode, encrypting the data using the RC4 algorithm with either 64 bit encryption or 128 bit encryption. However, WEP has become more vulnerable due to advances in hacking technology. State-of-the-art equipment can find WEP keys in a few minutes. WPA2/WPA Mixed Mode: select this to connect to a WLAN network that uses WiFi Protected Access (WPA) security or WiFi Protected Access II (WPA2) security. The EMG will accept either protocol when connecting to an access point (WPA2 will be preferred over WPA). The keys used by WPA and WPA2 are 256 bit, and the data is encrypted with Temporal Key Integrity Protocol (TKIP) or Counter Mode CBCMAC Protocol (CCMP), an AES encryption suite. WPA2 with CCMP encryption is the preferred security suite, as it offers the greatest level of security. WEP Security Parameters If the WEP security suite is selected, these authentication parameters can be selected and configured: Authentication: Select Open for a connection that establishes without first checking for matching encryption keys (if keys do not match, data may be dropped or become garbled and prevent connectivity on the IP level), or Shared for a connection that compares encryption keys of both parties as a form of authentication (if mismatches occur, no connection establishes). Note: Open authentication requires a passphrase; this passphrase is used to encrypt the data, and is not used for authentication. Key Type: For WEP Shared authentication, select the type of key required for the WLAN network: Passphrase for an ASCII password, or Hex for a 40 bit or 104 bit hexadecimal key. Key Size: For WEP Shared authentication, select the size of key required for the WLAN network: 40 bit for 64 bit WEP, or 104 bit for 128 bit WEP. If you use a 40 bit key size, you need a key that is 5 ASCII characters or 10 hex characters long; the 24 bit initialization vector (IV) is added to the 40 bit long key to produce a 64 bit key. If you use a 104 bit key size, you need a key that is 13 ASCII characters or 26 hex characters long; the 24 bit initialization vector is added to the 104 bit long key to produce a 128 bit key. The initialization vector is not user configurable. Passphrase / Retype Passphrase: For WEP Shared authentication with Passphrase, enter the ASCII passphrase required to authenticate the connection. For Key Size of 40 bits, the passphrase must be 5 characters. For Key Size of 104 bits, the passphrase must be 13 characters. All printable characters may be used in the passphrase. Transmit Key Index: For WEP Shared authentication with Hex keys, select which of the 4 hex keys to use to encrypt the data that is transmitted. For interoperability with some systems, this index must be set to 1. Key 1-4: For WEP Shared authentication with Hex keys, enter at least 1 and up to 4 hexadecimal keys. The keys should be exactly 10 hexadecimal characters for 64 bit WEP, and exactly 26 hexadecimal characters for 128 bit WEP. The Show Keys checkbox can be used to display the masked key. EMG™ Edge Management Gateway User Guide 105