Re: problems with VPN and NAT, help
From: Tracker (TheTrackers@attbi.com)Date: 08/07/02
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From: Tracker <TheTrackers@attbi.com> Date: Wed, 07 Aug 2002 12:45:27 +0400
Go to bugtrak to learn about VPNs/
Tracker
nicolas wrote:
> hello,
> I'm now in a company doing my thesis on VPN.
> I have to implement VPN between them and some cutumers.
>
> I have already implement a site-2-site VPN using GRE and Ipsec (for
> authentification and security feature) for one of their custumer, but
> when i want to do the second custumer i have a problem.
>
> Because each of their custumer have the same IP plan with NAT
> (172.20.0.0)
>
> So with the first custumer (using tunnel0 for the VPN), the route from
> our router is: ip route 172.20.0.0 255.255.0.0 tunnel 0
>
> when i want to do the second cutsumer (using tunnel1), the route will
> be
> ip route 172.20.0.0 255.255.0.0 tunnel 1
>
> This is not possible because i'll have two times 172.20.0.0 in the
> routing table
>
> To be able to do this i was thinking doing a double NAT (is it
> possible? How to do it?)
> Is there some others possibility better than a double NAT?
>
> Thanks by Advance
>
> Nicolas
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