User's Manual

Wireless Configuration for ISA550W and ISA570W
Configuring the Access Points
Cisco ISA500 Series Integrated Security Appliance Administrator Guide 162
5
Configuring the Access Points
The ISA550W and ISA570W support four SSIDs. By default, each SSID has Open
security and is identifying itself to all wireless devices that are in range. For
security purposes, we strongly recommend that you configure each SSID with the
highest level of security that is supported by the wireless devices that you want to
allow into your network.
Multiple SSIDs can segment the wireless LAN into multiple broadcast domains.
This configuration helps you to maintain better control over broadcast and
multicast traffic, which affects network performance.
This section includes the following topics:
• Configuring the Security Mode, page 162
• Controlling the Wireless Access Based on MAC Addresses, page 169
• Mapping the SSID to VLAN, page 170
• Configuring the SSID Schedule, page 171
Configuring the Security Mode
This section describes how to configure the security mode for the SSID.
NOTE Cisco strongly recommends WPA2 for wireless security. Other security modes are
vulnerable to attacks.
NOTE If the security mode is set as WEP or as WPA with TKIP encryption algorithm for the
SSID that supports 802.11n, the transmit rate for its associated client stations will
not exceed 54 Mbps.
STEP 1 Click Wireless -> Basic Settings.
The Basic Settings window opens.
STEP 2 In the SSID table area, click Edit to edit the settings for the SSID.
After you click Edit, the SSID Configurations - Edit window opens.