cấu trúc mạng lan

CCNA – Semester 3 Chapter 7: Basic Wireless Concepts and Configuration CCNA Exploration 4.0 2 Objectives • Describe the components and operations of basic wireless LAN topologies. • Describe the components and operations of basic wireless LAN security. • Configure and verify basic wireless LAN access. • Configure and troubleshoot wireless client access. 3 The Wireless LAN 4 Why Use Wireless? • Business networks today are evolving to support people who are on the move. • Mobility environment: where people can take their connection to the network along with them on the road. • There are many different infrastructures (wired LAN, service provider networks) that allow mobility like this to happen, but in a business environment, the most important is the WLAN. • People now expect to be connected at any time and place 5 Wireless Technologies 6 Wireless LAN 7 Comparing a WLAN to a LAN • In an 802.3 Ethernet LAN, each client has a cable that connects the client NIC to a switch. The switch is the point where the client gains access to the network. • In a wireless LAN, each client uses a wireless adapter to gain access to the network through a wireless device such as a wireless router or access point. 8 Wireless standards 9 Wireless Infrastructure Components 10 Configurable Parameters for Wireless Endpoints • Wireless mode • Wireless Network Name: SSID • Wireless Channel: [...]... Association 15 Client and Access Point Association Step 3 - 802.11 Association 16 Planning the Wireless LAN 17 Planning the Wireless LAN 18 Planning the Wireless LAN 19 Planning the Wireless LAN 20 Wireless LAN Security 21 Wireless LAN Security Threats Unauthorized Access 22 Wireless LAN Security Threats 23 Wireless LAN Security Threats • Denial of Service 24 Wireless Security Protocols 25 Wireless... Threats • Denial of Service 24 Wireless Security Protocols 25 Wireless Security Protocols 26 Wireless Security Protocols 27 Wireless Security Protocols • Encryption 28 Securing a Wireless LAN 29 Configure Wireless LAN Access 30 Configuring the Wireless Access Point 31 Setup: Basic Setup 32 Administration: Management 33 Configuring Basic Wireless Settings 34 Security Mode • Select the mode you want to . Association Step 3 - 802.11 Association 17 Planning the Wireless LAN 18 Planning the Wireless LAN 19 Planning the Wireless LAN 20 Planning the Wireless LAN . at any time and place 5 Wireless Technologies 6 Wireless LAN 7 Comparing a WLAN to a LAN • In an 802.3 Ethernet LAN, each client has a cable that connects the client NIC to a switch operations of basic wireless LAN topologies. • Describe the components and operations of basic wireless LAN security. • Configure and verify basic wireless LAN access. • Configure and troubleshoot