1-4
Figure 1-4
Internet Access and LAN-to-LAN Simultaneously
Creating a Virtual Private Network (VPN)
Virtual Private Networking (VPN) provides a means to connect remote LANs over
the Internet, while only local toll charges to an Internet Service Provider are incurred
even if the two LANs are physically remote to each other.
To create a VPN between two sites, a special connection called “tunnel” followed by
a VPN data session has to be set up over the Internet. After a VPN data session is set
up, data can be sent over it, optionally encrypted to prevent unauthorized access.
Additionally, VPN tunnels allow IP, IPX and Bridging traffic to flow across the
Internet, including NetBIOS information (for Windows networking) encapsulated
within IP or IPX packets.
All information required for a VPN is defined in a VPN profile, which contains, for
example, the IP address of the VPN partner and authentication information (including
the encryption key that is used).
When a PC from one site tries to communicate with a device on the other site for the
first time, the VPN tunnel and data session establishment process will be triggered
automatically. For the originating side, first the destination IP address will be used to
search for the corresponding VPN profile. Based on the information conifgured in the
matched VPN profile, a VPN tunnel is created, a VPN data session will be created
and authentication information exchanged, then data traffic can start to flow. For the
destination side, when a VPN data session creation is requested, the router will base
on the originating IP address to search for a matched profile. Once found, the
Wireless Router will use the information in the matched profile to authenticate the
incoming "call", after which data transfer can begin.
More than one VPN data sessions can be established over the same tunnel.
See chapter 4 for detailed configuration instructions.
Содержание Wireless Router
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