definitive guide for anyone with a network, from home networking enthusiasts to professional network administrators. The book explains network architectures and protocols using plain English and real-world examples, and gives valuable insight for fixing network problems. This updated edition includes the latest on network planning and design, and building a network using wired, wireless, or both technologies. It covers the latest updates in Windows XP Service Pack 2, as well as Gigabit Ethernet, virtual LANs, Bluetooth, WAP, security, firewalls, and VPN use.