how can i find my private lines are VPN or not?

i have a 10M  layer 2 based private line from east coast to west coast.
my upstream provider told me that it's VLAN based private line with no GRE or VPN.
but for some reason i can't shake the feeling that it's VPN based service.
is can i find out if it's vpn or not?
yoonlee357Asked:
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ksims1129Commented:
No you cant because a layer Vlan behaves the same way as a VPN.
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Istvan KalmarHead of IT Security Division Commented:
Hi, it is tru that ksims said!
If you want secured VPN you must use firewalls, and router to make real VPN, with encryption!
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