WireGuard or IPsec: what we deploy where
WireGuard is about 4,000 lines of code, it landed in the Linux kernel in 2020 and it fits on one page of config. IPsec drags along thirty years of RFCs and proposals that never quite match. And we still deploy IPsec in a good share of the places we work, for three reasons that show up in no comparison table: who is on the other end of the tunnel, who authenticates the people, and what happens when the cryptography has to change. An honest comparison, no fanboyism, with Europe's post-quantum calendar on the table.
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