Can anyone clarify what IPSEC pass through actually does ? 1

[pipkins]

Hello,

Can anyone clarify what IPSec Pass through actually does ?

For example, I have a NetGear DG824M DSL/Router which supports VPN pass through and hides the internal network behind NAT.

When I attempt to connect via VPN to my office, what happens to the IP packets, are they NATed as they leave my home network, in which case doesn't this corrupt the IPSec packet ?

If the packet is forwarded on untouched, won't the source address of the packet be from the internal private network i.e. 192.168.0.x and as such the remote VPN server will not be able to respond.

Can anyone clarify ?

 

[AlexIT]

IPSec pass-through will route (without damaging the packet) from your PUBLIC IP address to ONE internal machine IP address. (So you can only have ONE active IPSec connection behind the NetGear.) To your remote VPN server your IP address = your public IP address.