1. Home
    2. /
  2. Manuals
    3. /
  3. Zyxel
    4. /
  4. P-330W
    5. /
  5. 13
Page 61 / 141 Scroll up to view Page 56 - 60
ZyXEL P-330W User’s Guide
61
Chapter 5 Wireless
Figure 33
Wireless Security Setup: WPA-PSK
The following table describes the labels in this screen.
Table 23
Wireless Security Setup: WPA-PSK
LABEL
DESCRIPTION
Encryption
Choose
WPA
from the drop-down list box for TKIP encryption.
Choose
WPA2 (AES)
from the drop-down list box to use WPA2’s AES encryption.
Choose
WPA2 Mixed
from the drop-down list box to allow both TKIP or AES
encryption.
WPA
Authentication
Mode
Choose
Personal
to enable PSK mode.
WPA Format
Choose whether to enter the PSK by either
Passphras
e or
Hex
key.
Pre-Shared Key
The encryption mechanisms used for
WPA
and
WPA-PSK
are the same. The only
difference between the two is that
WPA-PSK
uses a simple common password,
instead of user-specific credentials.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including
spaces and symbols) or 64 hex characters.
Group Key Life
TIme
The
Group Key Life Time
is the rate at which the AP sends a new group key out
to all clients. The re-keying process is the WPA equivalent of automatically
changing the WEP key for an AP and all stations in a WLAN on a periodic basis.
Save
Click
Save
to save your changes back to the P-330W.
Reset
Click
Reset
to reload the previous configuration for this screen.
Page 62 / 141
ZyXEL P-330W User’s Guide
Chapter 5 Wireless
62
5.7.7
Introduction to RADIUS
RADIUS is based on a client-sever model that supports authentication and accounting, where
access point is the client and the server is the RADIUS server. The RADIUS server handles
the following tasks among others:
• Authentication
Determines the identity of the users.
• Accounting
Keeps track of the client’s network activity.
RADIUS user is a simple package exchange in which your P-330W acts as a message relay
between the wireless station and the network RADIUS server.
5.7.7.1
Types of RADIUS Messages
The following types of RADIUS messages are exchanged between the access point and the
RADIUS server for user authentication:
• Access-Request
Sent by an access point requesting authentication.
• Access-Reject
Sent by a RADIUS server rejecting access.
• Access-Accept
Sent by a RADIUS server allowing access.
5.7.7.2
Access-Challenge
Sent by a RADIUS server requesting more information in order to allow access. The access
point sends a proper response from the user and then sends another Access-Request message.
The following types of RADIUS messages are exchanged between the access point and the
RADIUS server for user accounting:
5.7.7.3
Accounting-Request
Sent by the access point requesting accounting.
5.7.7.4
Accounting-Response
Sent by the RADIUS server to indicate that it has started or stopped accounting.
Page 63 / 141
ZyXEL P-330W User’s Guide
63
Chapter 5 Wireless
In order to ensure network security, the access point and the RADIUS server use a shared
secret key, which is a password, they both know. The key is not sent over the network. In
addition to the shared key, password information exchanged is also encrypted to protect the
wired network from unauthorized access.
5.7.7.5
EAP Authentication Overview
EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the
IEEE802.1x transport mechanism in order to support multiple types of user authentication. By
using EAP to interact with an EAP-compatible RADIUS server, the access point helps a
wireless station and a RADIUS server perform authentication.
The type of authentication you use depends on the RADIUS server or the AP. The P-330W
supports EAP-TLS, EAP-TTLS and PEAP with RADIUS. Refer to the
Types of EAP
Authentication
appendix for descriptions on the four common types.
Your P-330W supports EAP-MD5 (Message-Digest Algorithm 5) with RADIUS.
The following figure shows an overview of authentication when you specify a RADIUS server
on your access point.
Figure 34
EAP Authentication
The details below provide a general description of how IEEE 802.1x EAP authentication
works. For an example list of EAP-MD5 authentication steps, see the IEEE 802.1x appendix.
1
The wireless station sends a “start” message to the P-330W.
2
The P-330W sends a “request identity” message to the wireless station for identity
information.
3
The wireless station replies with identity information, including username and password.
4
The RADIUS server checks the user information against its user profile database and
determines whether or not to authenticate the wireless station.
5.7.7.6
WPA with RADIUS Application Example
You need the IP address of the RADIUS server, its port number (default is 1812), and the
RADIUS shared secret. A WPA application example with an external RADIUS server looks
as follows. “A” is the RADIUS server. “DS” is the distribution system.
1
The AP passes the wireless client’s authentication request to the RADIUS server.
Page 64 / 141
ZyXEL P-330W User’s Guide
Chapter 5 Wireless
64
2
The RADIUS server then checks the user's identification against its database and grants
or denies network access accordingly.
3
The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then
sets up a key hierarchy and management system, using the pair-wise key to dynamically
generate unique data encryption keys to encrypt every data packet that is wirelessly
communicated between the AP and the wireless clients.
Figure 35
WPA with RADIUS Application Example
5.7.8
Configuring WPA Authentication
In order to configure and enable WPA encryption; click the
SECURITY
link under
WIRELESS
to display the
Wireless Security
screen. Select the mode
(WPA, WPA2, WPA2
Mixed)
from the
Encryption
list.
Select
ENTERPRISE
under
WPA Encryption Mode
.
Page 65 / 141
ZyXEL P-330W User’s Guide
65
Chapter 5 Wireless
Figure 36
Wireless Security Setup: WPA With RADIUS
The following table describes the labels in this screen.
Table 24
Wireless Security Setup: WPA
LABEL
DESCRIPTION
Encryption
Choose
WPA
from the drop-down list box for TKIP encryption.
Choose
WPA2 (AES)
from the drop-down list box to use WPA2’s AES
encryption.
Choose
WPA2 Mixed
from the drop-down list box to allow both TKIP or AES
encryption.
WPA Group Key
Update Timer
The
WPA Group Key Update Timer
is the rate at which the AP (if using
WPA-
PSK
key management) or
RADIUS
server (if using WPA key management)
sends a new group key out to all clients. The re-keying process is the WPA
equivalent of automatically changing the WEP key for an AP and all stations in a
WLAN on a periodic basis. Setting of the
WPA Group Key Update Timer
is also
supported in
WPA-PSK
mode. The P-330W default is
1800
seconds (30
minutes).
Authentication Server
IP Address
Enter the IP address of the external authentication server in dotted decimal
notation.
Port
Enter the port number of the external authentication server. The default port
number is
1812
.
You need not change this value unless your network administrator instructs you
to do so with additional information.

Rate

3.5 / 5 based on 2 votes.

Popular Zyxel Models

Famous Router IPs
Famous Router Companies
Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top