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VIRTUAL PRIVATE NETWORK By: Sunday Be Cuong Diep Overview Introduction to VPN System Requirement Basic VPN Requirement How to Enable VPN and configure as server How to Configure the VPN Client What is VPN ? Virtual private networking (VPN) in Microsoft Windows 2000 allows mobile users to connect over the Internet to a remote network. With virtual private networking, the user connects to the local ISP and then uses the Internet to make a connection to the Network Access Server (NAS). How Does VPN Work? The Internet Security and Acceleration (ISA) Server is configured as a VPN Server The local ISA VPN computer connects to its ISP The remote VPN wizard runs on the ISA Server on the remote network The remote ISA Server VPN computer connects to its ISP When a computer on the local network communicates with a computer on the remote network, data is encapsulated and sent through the VPN tunnel VPN Tunnel System Requirement Microsoft Windows 2000, Server Microsoft Windows 2000, Professional Basic VPN Requirements User Authentication Address Management Data Encryption Key Management Multi protocol Support User Authentication VPN client’s identity must be verified and access must be restricted to authorized users only Address Management The VPN server must assign the client an IP address on the intranet and ensure that private addresses are kept private IP addresses can be assigned using DHCP or a static pool of addresses Data Encryption Data sent and received over the Internet must be encrypted for privacy Microsoft Implementation of these protocols uses IPSec encryption to protect the data stream from the client to the tunnel server. Key Management The solution must generate and refresh encryption keys for the client and the server Multi-Protocol Support The solution must handle common protocols used in the public network. These include IP, Internet work Packet Exchange (IPX), etc… Install and Enable VPN Windows 2000 Server supports a VPN network and already has software installed on the operating system. A user will only have to enable this feature INTERNET CONNECTION NEDDED (DSL) CAN LEASE T-1 LINE COMPANY WILL PROVIDE REAL IP ADDRESS Configuring a VPN Client Web Reference www.Microsoft.com – Keyword “Virtual Private Network” END OF VPN PROJECT