Hardening de Servidores Linux: Como Blindar o SSH com Chaves Ed25519 e Eliminar Ataques de Força Bruta

Basta alocar um IP público em qualquer VPS na AWS, DigitalOcean ou Hetzner para que, em questão de minutos, scanners automatizados comecem a bombardear a porta 22 do seu servidor com ataques de dicionário e força bruta. Consultar o arquivo /var/log/auth.log (ou journalctl -u ssh ) em servidores recém-criados revela milhares de tentativas de autenticação para usuários previsíveis como root , admin…

dev.to ·46m ago

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