Abstract: A network device connected to a network includes a physical port and multiple logical ports configured to provide guest access or authenticated access to the network via the physical port, to a supplicant device. An authorization engine determines whether the supplicant device is authorized to access the network. An authentication engine determines whether the supplicant device is compatible with an authentication protocol associated with the network based on a receipt or a non-receipt of a response from the supplicant device to one or more authentication requests. A guest table stores the source address of the supplicant device if the supplicant device is authorized to access the network and is incompatible with the authentication protocol, wherein the logical ports are configured to provide the guest access to the supplicant device corresponding to the source address stored in the guest table.