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Vpn Site To Site problem

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#1 Alessio21


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Posted 07 February 2016 - 07:27 AM

Hi Everyone,
i have a problem setting up a VPN Ipsec Site-to-Site with a Customer,
Below is a brief description of my network:
network A (vlan 1 / management)
network B (vlan 100 / computers)
The network that I have to connect via VPN connection, is the network B, unfortunately, the customer with which I have to establish a vpn connection, has my same network (network C)
There must be a two-way NAT (carried on both firewall, or just a NAT from my network to the remote?
I have very confused ideas about, all the guides I find, explain how to communicate two identical networks, but that's not my case because the customer has not itself a network b, so he can prepare a routing as follows: c network (local)> b network (remote) with no address conflict
My firewall is Zyxel USG 1100
Thanks in advice
Edi: I forgot to specify that the network in, does not need to communicate with the network c and viceversa

Edited by Alessio21, 07 February 2016 - 09:44 AM.

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