Client to Server VPN
Client to Server VPN-RRAS
A virtual private network is a means of connecting to a private network (such as your office network) by way of a public network (such as the Internet). A VPN combines the virtues of a dial-up connection to a dial-up server with the ease and flexibility of an Internet connection. By using an Internet connection, you can travel worldwide and still, in most places, connect to your office with a local call to the nearest Internet-access phone number. If you have a high-speed Internet connection (such as cable or DSL) at your computer and at your office, you can communicate with your office at full Internet speed, which is much faster than any dial-up connection that uses an analog modem. This technology allows an enterprise to connect to its branch offices or to other companies over a public network while maintaining secure communications. The VPN connection across the Internet logically operates as a dedicated wide area network (WAN) link.
Virtual private networks use authenticated links to make sure that only authorized users can connect to your network. To make sure data is secure as it travels over the public network, a VPN connection uses Point-to-Point Tunneling Protocol (PPTP) or Layer Two Tunneling Protocol (L2TP) to encrypt data.
Virtual private networks use authenticated links to make sure that only authorized users can connect to your network. To make sure data is secure as it travels over the public network, a VPN connection uses Point-to-Point Tunneling Protocol (PPTP) or Layer Two Tunneling Protocol (L2TP) to encrypt data.
Components of a VPN
A VPN in servers running Windows Server 2003 is made up of a VPN server, a VPN client, a VPN connection (that portion of the connection in which the data is encrypted), and the tunnel (that portion of the connection in which the data is encapsulated). The tunneling is completed through one of the tunneling protocols included with servers running Windows Server 2003, both of which are installed with Routing and Remote Access. The Routing and Remote Access service is installed automatically during the installation of Windows Server 2003. By default, however, the Routing and Remote Access service is turned off.The two tunneling protocols included with Windows are:
- Point-to-Point Tunneling Protocol (PPTP): Provides data encryption using Microsoft Point-to-Point Encryption.
- Layer Two Tunneling Protocol (L2TP): Provides data encryption, authentication, and integrity using IPSec.
Refer:How to install and configure a Virtual Private Network server in Windows Server 2003
Client to Server VPN-Router
Broadband Routers with VPN Servers
Until recently, VPN server hardware was VERY expensive. As home networks become more sophisticated, the demand for home level VPN’s increase. At the end of 2001, the home network industry responded by adding VPN servers into some broadband routers. These products are often priced at under $300 (us) and some are as inexpensive as $170.
VPN functionality is very processor intensive and most broadband routers have somewhat slow processors in them. Broadband router based VPN servers are often limited in throughput because of their microprocessors. Most have a maximum VPN throughput of around .6Mbps or 600Kbps.
More info about VPN Routers soon!
Outside Links for more info
VPN Labs Loads of VPN Info
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