The purpose of the network layer is to help route messages between different local networks. Central to this layer is the concept of exclusive network addresses, where every terminal connected to the ...

Communication protocols at Layers 3 (network) and 4 (transport) in the Open Systems Interconnect protocol stack have been getting help from silicon and firmware since the days of asynchronous transfer ...

Update: We're in the last throes of winter break 2019, which means most Ars' home office phones can stay dormant for a few more days. As such, we've been resurfacing a few classics from the ...