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NAT over Site-to-Site VPN

I want to connect IPsec Site-to-site VPN to one of our suppliers.
We both are using ASG/UTM.
But the supplier already has another customer with the same IP address range like ours connected (192.168.0.0/24)
So i tried some configurations with NAT, bot none of them worked until now.

The remote ip address range: 172.25.1.0/24
Our address range: 192.168.0.0/24
The fake IP address range we want to use: 172.28.4.16/28

The tunnel has configured the suppliers range on remote side and the fake range on our side.

I tried to to configure a source NAT on our side, but I cannot access any server on the suppliers side.

Has anybody an idea how ti solve this problem?

Thank you

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0 BarryG over 11 years ago

Hi, why do you want to use a fake IP range?
Do you have a a conflict with another network?

If the fake IP range could also be a /24, then a 1-1 NAT might be possible.

Barry
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0 BarryG over 11 years ago

Hi, why do you want to use a fake IP range?
Do you have a a conflict with another network?

If the fake IP range could also be a /24, then a 1-1 NAT might be possible.

Barry
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NAT over Site-to-Site VPN

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