Fail2ban on Ubuntu 24.04: stop SSH attacks
Install and configure Fail2ban on Ubuntu 24.04 to ban brute-force SSH attackers at the firewall: verify the stock jail, tune bans, recover from lockout.
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Self-host a WireGuard VPN on your VPS
Set up WireGuard on your own Linux VPS: key generation, wg0.conf, IP forwarding, NAT, AllowedIPs semantics, DNS, and the handshake failures that bite.