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feat: vps fail2ban + shared server-debug-tools module 🛡️

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VPS public SSH: enable fail2ban with bantime-increment so brute-force
probers get evicted with exponential backoff (1h → 4h → 16h → 2.7d →
10.7d, capped at 30d). Default jail covers sshd; maxretry=5 in 10m.

server-debug-tools: htop, tcpdump, dnsutils, jq, curl. Imported by
sunken-ship + phantom-ship via flake.nixosModules.server-debug-tools.
These are the practical bits we'd otherwise pick up by enabling
clan.core.enableRecommendedDefaults — but the full clan defaults flip
systemd-networkd/resolved on, which broke dnsmasq + navidrome's resolv
.conf bind-mount on the homelab servers, so we cherry-pick instead.
This commit is contained in:
DannyDannyDanny 2026-04-25 13:51:19 +02:00
parent b8bc17f385
commit 771cc58076
4 changed files with 35 additions and 0 deletions
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flake-modules/nixos-modules.nix
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@ -4,4 +4,5 @@
# modules = [ config.flake.nixosModules.dotfiles-rebuild ];
{ ... }: {
flake.nixosModules.dotfiles-rebuild = ../modules/dotfiles-rebuild.nix;
flake.nixosModules.server-debug-tools = ../modules/server-debug-tools.nix;
}