Patent ID: 7134140
Filing Date: 2006-11-07
Classification: G06F,H04L

Abstract:
1. A computer program product comprising a computer program operable to control a server computer, said computer program comprising: (i) address provision logic operable to control said server computer to provide an address for accessing a network to a client computer, in response to a request for an address from said client computer; (ii) token validation logic operable in response to said provision of said address to control said server computer to contact said client computer at said address provided to said client computer and to detect a presence of a predefined token on said client computer; wherein said token validation logic is operable to control said server computer to check whether said detected predefined token is valid: wherein said token validation logic is operable to control said server computer to revoke said address from said client computer if said token is not detected or is not valid.