For details, see the configuration guide of the authentication server.Ģ. In addition to performing the preceding configuration, you still need to add MAC addresses of terminals on the authentication server. Configure each interface in the interface view. dot1x mac-bypass interface gigabitethernet 1/0/1 gigabitethernet 1/0/5 dot1x enable interface gigabitethernet 1/0/1 gigabitethernet 1/0/5 Configure multiple interfaces in a batch in the system view. The following describes the configuration: Because the MAC address of the device is used as the credentials, an attacker can easily gain network access by spoofing the MAC address of previously authenticated clients. Below are the steps necessary in order, to deploy MAC-Based Access Control using Microsoft NPS.On S series switches (except S1700), you can enable MAC address bypass authentication for terminals such as printers on which the 802.1x client software cannot be installed or used to allow these terminals to access the network.įor example, if a large number of PCs and a small number of dumb terminals are connected to GE1/0/1 and GE1/0/5, to ensure that the PCs and dumb terminals access the network, you can enable 802.1x authentication and MAC address bypass authentication on GE1/0/1 and GE1/0/5. One is that it is not an association method that supports wireless encryption. Therefore clients will need to rely on upper layer protocols for encrypting traffic such as SSL or IPsec once a device has gained network access. MAC-Based Access Control has some security implications which must be considered. Below is a diagram showing a successful authentication. If the RADIUS server replies with an Access-Reject because the device does not match a policy, the AP will not grant network access. Upon receiving this message, the AP will grant network access to the device on the SSID. If a RADIUS policy exists on the server that specifies the device should be granted access and the credentials are correct, the RADIUS server will respond with an Access-Accept message. The username and password combination is always the MAC address of the connecting device, lower case without delimiting characters. With MAC-Based Access Control, devices must be authenticated by a RADIUS server before network access is granted on an SSID. The AP (RADIUS client) sends a RADIUS Access-Request to the RADIUS server containing the username and password of the connecting wireless device. It is critical to control which devices can access the wireless LAN. MAC-Based Access Control can be used to provide port based network access control on MR series access points. MAC-Based Access Control is one method for preventing unauthorized access to the Wireless LAN. This article discusses how MAC-Based Access Control works and provides step-by-step configuration instructions for Microsoft NPS and Dashboard.
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