On Oct 2, 2011 1:07 PM, "terryxing" <xingtia...@gmail.com> wrote: > > Thanks for your timely reply. > > Right, we are using two public ip for two remote hosts talking to each other. I am wondering if it is possible to let two host in private network talk to each other through their corresponding gateway having public ip ?
If there is IP connectivity then you should be able to establish a tunnel. > In that way, we need to configure the potables on the GW and do NAT. Do you know what port the gre tunnel is using to talking to remote hosts ? And it is using UDP right ? GRE is not a UDP based protocol. It runs directly over IP.
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