pajus @published 2026-09-23 · 8 min read Fail2ban on Debian 13 with nftables Set up fail2ban on Debian 13 with nftables: the Debian defaults, systemd journal backend, sshd and recidive jails, incremental bans and how to verify bans. Tags Debian Linux Security Server Hardening SSH Firewall
pajus @published 2026-09-23 · 9 min read Hardening SSH on Debian 13 with OpenSSH 10 Hardening SSH on Debian 13 (trixie): a practical sshd_config drop-in for OpenSSH 10.0, key-only logins, post-quantum KEX, rate limits and open CVEs. Tags SSH Debian Linux Security Server Hardening