Wireless Network Security Overview 無線網絡系統保安概覽

ASL experience in school projects Whole School Wireless Rollout Wireless Networking Project SAMS Project Web SAMS Project SIP MMLC Project ITED Project TSS

Why Wireless to improve the interactive learning mode in school to extend the learning process from one computer room into all classrooms and certain open areas

Wireless brings mobility. Examples are the following applications that can now be performed anywhere in a school. Used for Library -book reservation -check loan records -record renew Used for teaching -video sharing -file sharing Used for student assignment -information searching -knowledge sharing

Typical school IT environment

Wireless LAN Security Issues Issue  Hacker can view all information being broadcasted in a wireless network  Anyone in an Access Point coverage area can get on the wireless LAN

Wireless LAN Security Solutions 1/ Solution against the hacker Issue  Encrypt all data transmitted between client and Access Point  Without encryption key, user cannot transmit or receive data

Wireless LAN Security Solutions 2/ x Solution for the Authentication Issue

Key element of secured WLAN WPA’s technology 1) user authentication 802.1x + EAP 2) encryption TKIP 802.1x for dynamic key distribution MIC >>> WPA = 1) + 2)

Wired LAN Security Issues Issue  Virus attack  Intruder attack  Spam Solution  Anti-virus  IDS/IPS  Content Filter  Anti-spam

Sharing experience in school wireless rollout Convenience by Power over Ethernet When to use Roaming Why a/b/g Authentication and encryption setup

School Wireless Lan Implementation Work Flow Wireless Proposal a) Number of AP b) AP Location c) Quotation Accept by school? Site Survey No Yes Wireless Access Point Delivery Please get a whole school floor plan ready Implementation

School Wireless Lan Implementation Work Flow Finish Delivery Data Node Installation Access Point Hardware Installation Re-configuration User Acceptance Test? Wireless Software Configuration Pass

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