Patent ID: 8661522
Filing Date: 2014-02-25
Classification: H04L

Abstract:
1. A method for handling requests to a protected network, the method comprising: receiving packets from external devices attempting to access protected devices in the protected network; determining source addresses of the packets received from the external devices; determining whether a host table contains the determined source addresses; using a filter to determine if the external devices are currently being authenticated, in response to determining that the host table does not contain the determined source addresses; performing first authentication of the external devices according to a first authentication protocol, in response to determining that the external devices are not currently being authenticated; adding the determined source addresses of the external devices to the filter if the determined source addresses are not already in the filter; determining whether the external devices complete the first authentication; terminating connections of the external devices, in response to determining that the external devices did not complete the first authentication; and performing second authentication of the external devices according to a second authentication protocol, in response to determining that the external devices completed the first authentication.