Major VPN protocols
VPN Technologies
Article REF: H5610 V2
Major VPN protocols
VPN Technologies

Author : Jean-Paul ARCHIER

Publication date: April 10, 2026 | Lire en français

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5. Major VPN protocols

There are many protocols that can be used to support VPN communications, some of which may be proprietary to commercial companies. Here, we will focus only on the most common ones.

5.1 IPsec

IPsec is a protocol defined by several RFC (Request for Comments) documents. It is described in great detail in another article at [TE 7 545] , as well as at

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