Ruckus Wireless ZoneDirector 1200 User Manual page 125

The conditions for detecting rogue DHCP servers depend on whether ZoneDirector's
own DHCP server is enabled:
• If the built-in DHCP server is enabled, ZoneDirector will generate an event when it
detects any other DHCP server on the network.
• If the built-in DHCP server is disabled, ZoneDirector will generate events when it
detects two or more DHCP servers on the network. You will need to find these DHCP
servers on the network, determine which ones are rogue, and then disconnect them
or shut down the DHCP service on them.
The Rogue DHCP Server Detection feature is enabled by default. If it is disabled, use
the following procedure to re-enable:
To enable rogue DHCP server detection on ZoneDirector (enabled by default):
1. Go to Configure > WIPS.
2. In the Rogue DHCP Server Detection section, select the Enable rogue DHCP
server detection check box.
3. Click the Apply button that is in the same section.
You have completed enabling rogue DHCP server detection. Ruckus Wireless
recommends checking the Monitor > All Events/Activities page periodically to determine
if ZoneDirector has detected any rogue DHCP servers. When a rogue DHCP server is
detected, the following event appears on the All Events/Activities page:
Rogue DHCP server on [IP_address] has been detected.
If the check box is cleared, ZoneDirector will not generate these events.
NOTE Rogue DHCP server detection only works on the ZoneDirector's management
IP subnet.
Ruckus Wireless ZoneDirector Release 10.0 User Guide
Configuring Security and Other Services
Configuring Wireless Intrusion Prevention
125