Setting Up a Debian IPSEC NAT
June 14th, 2007
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Network Layout
(10.0.2.0/24) ---> (10.0.2.2)
[NAT 10.0.2.2 <-> 10.130.0.2]
LAN A VPN Gateway
(193.115.229.12)
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(193.115.229.11)
LAN B VPN Gateway B
(10.200.x.x/28) ---> (10.200.x.2)
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(10.0.2.0/24)
LAN C
The aim is to have the two LANs on either end communicating freely with each other across a VPN tunnel where there is a confilct in the address ranges (LAN A and LAN C). In the test setup the VPN gateways have public IP addresses as the VPN tunnel will run over the Internet. Obviously, the gateways have two network interfaces – an internal interface (.2) and an external interface (.12 or .13)
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