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Isn't geodata revealed when the packets leave a VPN node? (programming.dev)
submitted 10 months ago by to c/vpn@lemmy.world
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If outgoing packets that leave a VPN node contain my endpoint's IP address - which it must, since how else would it later be routed back to me - how does the location of the VPN exit node spoof my endpoint's real location? Isn't it obvious when the receiver inspects the packets what/where the source IP is?

If my endpoint's IP address is not included in the packets that exit the VPN tunnel, how then does that same node - or other nodes in case of multi hop - route the packets back to my endpoint? Are there perhaps VPN specific identifiers in the packet that only that node knows how to route back to me?

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[–] 3 points 10 months ago (2 children)

Same way it happens with non VPN setups.

Network Address Translation. Your personal device is assigned a private IP (likely from RFC1918 or 100.64.0.0/17 range) and that is unique to you for as long as the VPN tunnel is established.

When the traffic leaves the public VPN endpoint it will be translated into a public address. All the website you are trying to access will do is respond to the public IP and there will be a translation table at the VPN provider saying which private IP to send the traffic.

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