D-Link NetDefend SOHO DFL-160, Руководство пользователя

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4.4. VPN Options
VPN Usage
The Internet is increasingly used as a means to connect together computers since it offers efficient
and inexpensive communication. The requirement therefore exists for data to traverse the Internet to
its intended recipient without another party being able to read or alter it.
VPN allows the setting up of a tunnel between two devices known as tunnel endpoints. All data
flowing through the tunnel is then secure. The mechanism that provides tunnel security is
encryption.
There are two common scenarios where VPNs are used:
1. LAN to LAN connection - Where two internal networks need to be connected together over
the internet. In this case, each network is protected by an individual DFL-160 and the VPN
tunnel is set up between them.
2. Client to LAN connection - Where many remote clients need to connect to an internal
network over the internet. In this case, the internal network is protected by the DFL-160 to
which the client connects and the VPN tunnel is set up between them.
4.4. VPN Options Chapter 4. The Firewall Menu
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