Troubleshooting
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WireGuard MTU Calculator and Fragmentation Fix
Work out the right WireGuard MTU from your path MTU, understand the 60 and 80 byte overhead, measure the real ceiling, and clamp TCP MSS correctly.
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WireGuard Setup on Ubuntu: Server and Client
A config-first WireGuard install on Ubuntu: key generation, wg0.conf for server and client, forwarding, firewall rules, and adding peers without downtime.
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WireGuard Explained: Keys, AllowedIPs, and NAT Traversal
How WireGuard really works: the static key handshake, what AllowedIPs controls, PersistentKeepalive and NAT, MTU math, and how it compares to OpenVPN.