I see a few questions related but am not sure I understand how VPNs work so my question is: Can you sniff VPN traffic the same way as you would another network like a coffee shop. For example, at a coffee shop, I can just run tcpdump and listen to any connections to that coffee shops router thus seeing what the person next to me is doing. However, does a VPN work like this as well? For instance, could I setup a VPN and the user next to me is on the same VPN (different user login to the VPN) and run tcpdump and still sniff that persons traffic?
I understand that VPN traffic is encrypted but that is to people outside of the VPN itself (or is it also encrypted for each user?).