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Snow Xu posted an update 3 years ago
https://www.evernote.com/shard/s550/sh/7e4c4d11-181e-fb48-8d73-192fd10b9a77/586b7a6063cc7cb83ee6f167b671f04f
The electronic personal network connection usually referred to as VPN relationship is really a attached pc system that is implemented as an additional application layer at the top of an existing network