User`s manual

Example VPN between two internal networks:
Autokey IPSec VPN between two networks
Use the following procedures to configure a VPN that provides a direct communication link between users
and computers on two different networks. Example VPN between two internal networks
shows an example
VPN between the main office and a branch office of a company. Users on the main office internal network can
connect to the branch office internal network and users on the branch office internal network can connect to
the main office internal network. Users on the branch office network can also connect to services such as an
email server running on the main network.
Communication between the two networks takes place in an encrypted VPN tunnel that connects the two
DFL-500 VPN gateways across the Internet. Users on the internal networks are not aware that when they
connect to a computer on the other network that the connection is across the Internet.
As shown in Example VPN between two internal networks
, each internal network can be protected by a DFL-
500 VPN gateway. Alternatively, one of the networks can be protected by a third-party VPN gateway that also
supports IPSec and Autokey IKE.
Use the following procedures to configure an IPSec Autokey IKE VPN between internal networks:
• Creating the VPN tunnel
• Adding internal and external addresses
• Adding an IPSec VPN policy
DFL-500 User’s Manual
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