Motorola AP-51 Series, Product Reference Manual

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Configuring Access Point Security 6-5
6.3 Enabling Authentication and Encryption Schemes
To complement the built-in firewall filters on the WAN side of the access point, the WLAN side of the
access point supports authentication and encryption schemes. Authentication is a challenge-
response procedure for validating user credentials such as username, password, and sometimes
secret-key information. The access point provides two schemes for authenticating users:
802.1x EAP
and Kerberos .
Encryption applies a specific algorithm to alter its appearance and prevent unauthorized reading.
Decryption applies the algorithm in reverse to restore the data to its original form. Sender and
receiver must employ the same encryption/decryption method to interoperate.
Wired Equivalent Privacy (WEP) is available in two encryption modes: 40 bit (also called WEP 64) and
104 bit (also called WEP 128). The 104-bit encryption mode provides a longer algorithm (better
security) that takes longer to decode (hack) than the 40-bit encryption mode.
Each WLAN (16 WLANs available in total to an access point regardless of the model) can have a
separate security policy. However, more than one WLAN can use the same security policy. Therefore,
to avoid confusion, do not name security policies the same name as WLANs. Once security policies
have been created, they are selectable within the
Security field of each WLAN screen. If the
existing default security policy does not satisfy the data protection requirements of a specific WLAN,
a new security policy (using the authentication and encryption schemes discussed above) can be
created.
To enable an existing WLAN security policy or create a new policy:
1. Select Network Configuration -> Wireless -> Security from the access point menu tree.
The Security Configuration screen displays .
2. If a new security policy is required, click the Create button.
The New Security Policy screen displays with the Manually Pre-shared key/No
authentication and No Encryption options selected. Naming and saving such a policy (as
is) would provide no security and might only make sense in a guest network wherein no
sensitive data is either transmitted or received.
CAUTION Only a qualified installation professional should set or restore the
access point’s radio and power management configuration in the
event of a password reset.
!