I'm curious about how VPN protocols encrypt data traffic and their authentication processes. What are the advantages and disadvantages of different protocols (like OpenVPN, IKEv2, WireGuard, etc.)? In which scenarios is it reasonable to choose one over the others?
How do VPN protocols provide security?
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VPN protocols can be thought of like different versions of a smart lock: OpenVPN is like a complex key set (very secure but a bit slow), WireGuard is a simple modern key (fast and minimalist). IKEv2 is similar to the central lock of a car that locks itself automatically—ideal for quick connection drops. Which one you use depends on your needs: WireGuard is good for torrenting, while OpenVPN might be more reliable for corporate security.