Ruijie RG-WLAN Series User Manual

Configuration Guide Configuring Web Authentication
1.4.25 Enabling DHCP Address Check
Configuration Effect
 Allow only the clients that are allocated with IP addresses through DHCP to perform authentication.
Notes
 To use the DHCP address check function, you must configure DHCP snooping.
 DHCP address check is supported only for IPv4.
 DHCP address check is applicable only to Ruijie Second-Generation Web Authentication and iPortal Web
Authentication.
 The requirement that users obtain IP addresses through DHCP must be specified during network deployment. Those
users cannot also use static IP addresses; otherwise, the existing users that use static IP addresses will be affected.
 If a few users need to use static IP addresses, configure these IP addresses as straight-through addresses, and these
users are exempt from authentication.
Configuration Steps
 Optional.
 Enable DHCP snooping.
 Enable DHCP address check.
Verification
 Enable DHCP address check.
 Configure a static IP address that is not allocated by the DHCP server on a client.
 Connect the client to the Internet and check whether the STA cannot perform authentication.
Related Commands
 Enabling DHCP Address Check
Command
web-auth dhcp-check
Parameter
Description
N/A
Command
Mode
Global configuration mode
Usage Guide
Configure DHCP address check to allow only the users who obtain IP addresses through DHCP to access
the Internet. This function helps prevent the users who configure IP addresses without authorization from
performing authentication to access the Internet.
Configuration Example

Ruijie RG-WLAN Series Specifications

General

Brand	Ruijie
Model	RG-WLAN Series
Category	Wireless Access Point
Language	English