A method and apparatus for providing security to an endpoint device are disclosed. For example, the method receives a signaling message by the endpoint device. The method processes the signaling message, if the signaling message is received from a device associated with one of one or more Internet Protocol (IP) addresses in an Access Control List (ACL), and discards the signaling message, if the signaling message is received from a device not associated with one of the one or more IP addresses in the ACL.