nginx instead of caddy for stargate + fail2ban

systems/x86_64-linux/stargate/services/fail2ban.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  pkgs,
+  ...
+}: {
+  environment.etc = {
+    # Define an action that will trigger a Ntfy push notification upon the issue of every new ban
+    "fail2ban/action.d/ntfy.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
+      [Definition]
+      norestored = true # Needed to avoid receiving a new notification after every restart
+      actionban = curl -H "Title: <ip> has been banned" -d "<name> jail has banned <ip> from accessing $(hostname) after <failures> attempts of hacking the system." https://ntfy.kylekrein.com/Fail2banNotifications
+    '');
+    # Defines a filter that detects URL probing by reading the Nginx access log
+    "fail2ban/filter.d/nginx-url-probe.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
+      [Definition]
+      failregex = ^<HOST>.*(GET /(wp-|admin|boaform|phpmyadmin|\.env|\.git)|\.(dll|so|cfm|asp)|(\?|&)(=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000|=PHPE9568F36-D428-11d2-A769-00AA001ACF42|=PHPE9568F35-D428-11d2-A769-00AA001ACF42|=PHPE9568F34-D428-11d2-A769-00AA001ACF42)|\\x[0-9a-zA-Z]{2})
+    '');
+  };
+  services.fail2ban = {
+    enable = true;
+    # Ban IP after 5 failures
+    maxretry = 5;
+    ignoreIP = [
+      # Whitelist some subnets
+      "192.168.178.0/24"
+    ];
+    bantime = "24h"; # Ban IPs for one day on the first ban
+    bantime-increment = {
+      enable = true; # Enable increment of bantime after each violation
+      #formula = "ban.Time * math.exp(float(ban.Count+1)*banFactor)/math.exp(1*banFactor)";
+      multipliers = "1 2 4 8 16 32 64";
+      maxtime = "1680h"; # Do not ban for more than 10 weeks
+      overalljails = true; # Calculate the bantime based on all the violations
+    };
+    jails = {
+      nginx-url-probe.settings = {
+        enabled = true;
+        filter = "nginx-url-probe";
+        logpath = "/var/log/nginx/access.log";
+        action = ''          %(action_)s[blocktype=DROP]
+                           ntfy'';
+        backend = "auto"; # Do not forget to specify this if your jail uses a log file
+        maxretry = 5;
+        findtime = 600;
+      };
+    };
+  };
+}