RE: Is it possible to detect when a person is connecting via VPN

There is no difference between a user on the local network and a user
coming in via a VPN as far as the operating system cares or knows about.
The user connected from an IP address, and if we have a proper route
back to them, we can respond and send them information. If you can't
tell by the IP address, then you won't be able to tell as far as I know.

Kevin Bucknum
Senior Programmer Analyst
MEDDATA/MEDTRON
Tel: 985-893-2550

-----Original Message-----

From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of Mark Murphy/STAR BASE Consulting Inc.
Sent: Monday, April 10, 2017 8:08 AM
To: Midrange Systems Technical Discussion
Subject: Is it possible to detect when a person is connecting via VPN

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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