Patent attributes
A network access arrangement must allocate and store a network address to a client computer. The network access arrangement then monitors file request messages which include an originating network address and compares the originating network address in each request with the stored network address. In the event of a match then instead of returning the requested file, a substituted file is returned to the client. The originating network address is deleted from the network access store such that subsequent file requests are unaffected. Thus, instead of client computer user first receiving the default file requested, a file substituted by the operator of the network access arrangement is received. This substituted file can, for example, contain a variety of information of utility to the user, including news, service information and advertisements.
