User Manual

Manage Device Security
300
M4100 Series Managed Switch
24. Use Denial of Service UDP Port to enable UDP Port DoS prevention.
This causes the switch to drop packets with UDP source port equal to UDP destination
port. The factory default is disabled.
Port Authentication Overview
In port-based authentication, when 802.1X is enabled globally and on the port, successful
authentication of any one supplicant attached to the port results in all users being able to use
the port without restrictions. At any given time, only one supplicant is allowed to attempt
authentication on a port in this mode. Ports in this mode are under bidirectional control. This
is the default authentication mode.
The 802.1X network has three components:
• Authenticators. Specify the port that is authenticated before permitting system access.
• Supplicants. Specify the host connected to the authenticated port requesting access to
the system services.
• Authentication Server. Specifies the external server, for example, the RADIUS server
that performs the authentication on behalf of the authenticator, and indicates whether the
user is authorized to access system services.
Configure Global 802.1X Settings
You can use 802.1X to enable or disable port access control on the system.
 To configure global 802.1X settings:
1. Prepare your computer with a static IP address in the 169.254.100.0 subnet, for
example, 169.254.100.201.
2. Connect an Ethernet cable from an Ethernet port on your computer to an Ethernet port on
the switch.
3. Launch a web browser.
4. Enter the IP address of the switch in the web browser address field.
The default IP address of the switch is 169.254.100.100.
The Login screen displays.
5. Enter the user name and password.
The default admin user name is admin and the default admin password is blank, that is,
do not enter a password.
6. Click the Login button.
The web management interface menu displays.