WatchGuard Technologies Firebox SOHO 6.1 ユーザーズマニュアル

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User Guide
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CHAPTER 8
VPN—Virtual Private 
Networking
This chapter describes an optional feature of the WatchGuard 
SOHO 6, Virtual Private Networking (VPN) with IPSec. 
Why Create a Virtual Private Network?
Virtual Private Networking (VPN) tunnels enable you to securely 
connect computers in two locations without requiring expensive, 
dedicated point-to-point data connections. With VPN, you use low 
cost connections to the Internet to create a virtual connection 
between two branch offices. Unlike a simple, unencrypted Internet 
connection, a VPN connection eliminates any significant risk of 
data being read or altered by outside users as it traverses the 
Internet.