added vps2

machine/vps2.nix

@@ -0,0 +1,70 @@
+{ config, lib, pkgs, ... }:
+let
+  secrets = import ../configs/secrets.nix;
+  be = import ../configs/borg-exclude.nix;
+  unstable = import <nixos-unstable> { config.allowUnfree = true; };
+in {
+  imports =
+    [ /etc/nixos/hardware-configuration.nix ../configs/common-server.nix ];
+
+  time.timeZone = "Europe/Berlin";
+
+  networking = {
+    hostName = "vps2"; # Define your hostname.
+    useDHCP = false;
+    interfaces.ens18 = { useDHCP = true; };
+    wireguard.interfaces = {
+      wg0 = {
+        ips = [ "10.100.0.50/32" ];
+        privateKey = secrets.wireguard-vps2-private;
+        peers = [{
+          publicKey = secrets.wireguard-vps-public;
+          presharedKey = secrets.wireguard-preshared;
+          allowedIPs = [ "10.100.0.0/24" ];
+          endpoint = "szczepan.ski:51820";
+          persistentKeepalive = 25;
+        }];
+      };
+    };
+    firewall = {
+      allowPing = true;
+      allowedTCPPorts = [
+        80 # web
+        443 # web
+      ];
+      allowedUDPPorts = [
+        80 # web
+        443 # web
+      ];
+    };
+  };
+
+  environment.systemPackages = with pkgs; [ ];
+
+  programs = {
+    mtr.enable = true;
+    fuse.userAllowOther = true;
+  };
+
+  services = {
+    fail2ban = {
+      enable = true;
+
+      jails.DEFAULT = ''
+        bantime  = 7d
+      '';
+
+      jails.sshd = ''
+        filter = sshd
+        maxretry = 4
+        action   = iptables[name=ssh, port=ssh, protocol=tcp]
+        enabled  = true
+      '';
+    };
+  };
+
+  # Limit stack size to reduce memory usage
+  systemd.services.fail2ban.serviceConfig.LimitSTACK = 256 * 1024;
+
+  system.stateVersion = "22.11";
+}