Dynamic packet-filtering firewalls, the fourth generation firewall technology, are also referred to more specifically as “stateful firewalls”. Stateful firewalls represent the most versatile firewall ...

Network-switch designs have evolved to support multimedia traffic through QOS (quality-of-service) techniques. But WLANs (wireless LANs) fundamentally differ from wired Ethernet in a number of ways ...

With the whole of the networking worldmoving toward inhabiting a single global village, we inevitablyhave to start thinking about locking our doors and bolting ourwindows. It has to be recognized that ...

In the beginning, a packet-filtering router had the intelligence to look at each TCP/IP packet header and make decisions on whether to pass or drop the packet. Such a solution was often called a plain ...

In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...