nix-config/hosts/trantor/openssh.nix
William f1b6be6f3f Add fail2ban configuration for SSH and Forgejo on Trantor
- Configure fail2ban with progressive ban times (1h base, up to 10000h max)
- Add SSH jail with password authentication disabled
- Add Forgejo jail using systemd journal backend
- Ignore private networks and Tailscale IPs
- Set Forgejo to 10 retries per hour, 15min initial ban

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-09 13:00:17 -03:00

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{ ... }:
{
services = {
openssh = {
settings = {
PasswordAuthentication = false;
KbdInteractiveAuthentication = false;
};
};
fail2ban.jails.sshd = {
settings = {
enabled = true;
port = "ssh";
filter = "sshd";
logpath = "/var/log/auth.log";
maxretry = 5;
findtime = "10m";
bantime = "1h";
};
};
};
}