Methods and apparatus are described for providing access to a network via a first one of a plurality of network access nodes in the network. The network access nodes each have a network address associated therewith which is unique on the network, the first network access node having a first network address associated therewith. The first network address is associated with a first computer while the first computer is connected to the first network access node thereby providing access to the network. Transmissions associated with the first computer are monitored to determine address information. The transmissions are then processed in response to the address information.