Patent ID: 8555347
Filing Date: 2013-10-08
Classification: H04L

Abstract:
1. A method comprising: receiving, by a network device, a Dynamic Host Configuration Protocol (DHCP) DISCOVER message from a DHCP client of a user device, generating, by the network device, a challenge based on receiving the DHCP DISCOVER message; sending, by the network device, the challenge, to an authentication device, in a Remote Authentication Dial In User Service (RADIUS) access-request message; receiving, by the network device, a RADIUS access-accept message from the authentication device based on sending the challenge to the authentication device, generating, by the network device, a DHCP OFFER message; determining, by the network device, whether the RADIUS access-accept message, from the authentication device, includes the first challenge response; when the RADIUS access-accept message, from the authentication device, does not include the first challenge response: when the RADIUS access-accept message, from the authentication device, includes the first challenge response: