Microsoft Window 7 -- 6292A_05.ppt

Module 5 Configuring Wireless Network Connections Module Overview Overview of Wireless Networks Configuring a Wireless Network Lesson 1: Overview of Wireless Networks What Is a Wireless Network? Wireless Network Technologies Security Protocols for a Wireless Network What Is a Wireless Network? Advantages Extends or replaces wired infrastructure (wire-free) Increases productivity for mobile employees Provides access to internet in public places Disadvantages Possible interference Potential security risk Additional management A wireless network:  Two modes: Interconnected devices connected by radio waves instead of wires or cables Ad hoc Infrastructure Wireless Network Technologies Wireless Broadband: Provides high-speed wireless internet and data network access Comparable to wired broadband, such as ADSL or cable modem ü ü Used to have constant connectivity to internet and corporate network ü Windows 7 supports for Wireless Broadband: Driver-based model for mobile broadband devices ü Used the same user interface regardless of the provider ü Windows 7 provides built-in support for all standards, but also depends on: The wireless network adapter ü The wireless network adapter driver ü Security standard Authentication methods Encryption methods Remarks IEEE 802.11 Open system and shared key WEP Weak authentication and encryption. Use is highly discouraged IEEE 802.1X EAP authentication methods WEP Strong EAP methods provide strong authentication WPA-Enterprise 802.1X TKIP / AES Strong authentication (with strong EAP method) and strong (TKIP) or very strong (AES) encryption Used for medium and large organizations WPA-Personal PSK TKIP / AES Strong authentication (with strong PSK) and strong (TKIP) or very strong (AES) encryption Used for home networks or small offices WPA2-Enterprise 802.1X TKIP / AES Strong authentication (with strong EAP method) and strong (TKIP) or very strong (AES) encryption Used for medium and large organizations WPA2-Personal PS