Is it possible to detect when a person is connecting via VPN -- MIDRANGE-L

Subject: Is it possible to detect when a person is connecting via VPN
From: "Mark Murphy/STAR BASE Consulting Inc." <mmurphy@xxxxxxxxxxxxxxx>
Date: Mon, 10 Apr 2017 09:08:09 -0400
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From an interactive RPG application, I want to be able to interrogate a user's session to determine if they are on the local network, or if they are using a VPN to gain access. The users in question have laptops with static IP addresses. I don't want to know about the advantages of DHCP, the static IPs are not my decision, and I don't have the authority to change it. I am looking for an API or a technique to detect the VPN user.

Mark Murphy
Atlas Data Systems
mmurphy@xxxxxxxxxxxxxxx

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Follow-Ups:

RE: Is it possible to detect when a person is connecting via VPN , Kevin Bucknum
Re: Is it possible to detect when a person is connecting via VPN , Rob Berendt
RE: Is it possible to detect when a person is connecting via VPN , Steinmetz, Paul

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