diff --git a/flake.nix b/flake.nix
index 735b5b9..a5b90d9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -148,6 +148,7 @@
             quadlet-nix.nixosModules.quadlet
             crowdsec.nixosModules.crowdsec
             crowdsec.nixosModules.crowdsec-firewall-bouncer
+            { nixpkgs.overlays = [ crowdsec.overlays.default ]; }
           ];
         };
       };
diff --git a/secrets.nix b/secrets.nix
index cb1d980..3b3ede4 100644
--- a/secrets.nix
+++ b/secrets.nix
@@ -4,8 +4,6 @@ let
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM8G6okW/vpl3DTBwL64aPb+oxJsr2Wl6KzHYsLPecBc millironx@millironx.com";
   bosephus-host =
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIxTfeg+GZsfmG8TuEV1xW1gXknAIKzZ3UjZ3guRY+EW root@nixos";
-  bosephus-root =
-    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFFl4zOdlKkpoccPZTX8195068gJVhylvV9pUYxy2kM+ root@bosephus";
   bosephus-millironx =
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKaDPqRJHoqgY2pseh/mnhjaGWXprHk2s5I52LhHpHcF millironx@bosephus";
   odyssey-millironx =
@@ -17,7 +15,6 @@ let
 
   system-administrators = [
     anderson-millironx
-    bosephus-root
     bosephus-millironx
     odyssey-millironx
     corianne-millironx
diff --git a/secrets/ansible-vault-password.age b/secrets/ansible-vault-password.age
index d0be48c..99a96bc 100644
--- a/secrets/ansible-vault-password.age
+++ b/secrets/ansible-vault-password.age
@@ -1,15 +1,13 @@
 age-encryption.org/v1
--> ssh-ed25519 il3lzQ oDA/rl4XZJY+vIIdnMBaAuSMD+DnMX2n6+B3geHw/1Q
-Jpv2pN6KwJAHgwWBbAAgmGVrZeO+wLmuwFRpJLsUDcU
--> ssh-ed25519 bN6E9A jKvJPR87Eojde1aq2FFxRj+cxy+0S7Eix5JwRPRpX34
-48eC+KdOBcIGU0y2ui4iq+g8K9SG7qc3U60ApLU+w+Q
--> ssh-ed25519 1g/xww UiK5nDMJg+tTc7zdE5zlEXmoBPE5dV2EpHxvhWBENmU
-ljQEJ+tiZPdFrpiZER5EOIsdnhpj05EKryhzm0vM3LU
--> ssh-ed25519 +kBihw ZIcwOBbRMJ8jiu9Vcq8BvGyOT1xuqG+Mf/DXUHMeCAA
-wlXcO4kQpHmka49CARH0xvm/Lh0AcQ1j/bPx12wZVBY
--> ssh-ed25519 dbKeHw +G44jyudYu9opDuMcTs05j5Ha91m9lm5g551uIAACEk
-9DXJxDc2L3PDCAi3cLfVajqPseaxmBpb+Uo3AW2R05I
--> ssh-ed25519 Svnssw PZN+FpZsFnCqerEgW7B4RFHo7iumlUXL4pYt54/XxjM
-bKrgyqBpIMnntB0CHA560TvraQE9bPF06oOXR+wocIA
---- RW8fUuT62TXXKS8k8MgKISzwORr/3hEl0XK2XSZFzpA
-W:���iZS�����t�h��՞0J�Eg���PT�#8�������-���'�ȰL8k�p�
\ No newline at end of file
+-> ssh-ed25519 il3lzQ Ni2CHjeijXHfF62cUqVTm8MAOn6rRg8UrhqN6xvdkyk
+DsT0Ysx88FlCLeRzoOGctX7KqatX9/UCr5WdtdLJAf4
+-> ssh-ed25519 1g/xww jRn91F29sISMyi41anAlzVCzt1t1DnUqxtryqkTQPlM
+cysgZLQR0YhiJYXBl59DjKbm+N8FnjA46wkQtnAzBFA
+-> ssh-ed25519 +kBihw t6wlSnDKGgSzGhNJnryXVbDR40DATaV3fHovtI/u7zo
+zOyCZtzfLKeer9K6SMpfTxn6El4HB7gQFQqLOxIYB5U
+-> ssh-ed25519 dbKeHw cn+8WTwis58bYm2pfEra6LeLvzEZ8GhZrOEeN+kkhCM
+fnlUAj8JtG8+r7Cj8xYUgF+JM6Pwqawn4sGI1LOeN78
+-> ssh-ed25519 Svnssw zmDBR8TdRZ9NzNhwPYRN6c8naTxAkULyUZpKgk7Gshk
+0XCwpegEIlGXhnzLLUtmciKQiYiZRgnSOSvCcYeXXk8
+--- D/lZ36n5sVste2NWfdOx8/klPh0CTmMjVQN74KIqDRY
+]%���C}�N��O��"v��#�˱���
�t���_Q;^*!�+<+���dB�/K���`
\ No newline at end of file
diff --git a/secrets/darwin-policies-json.age b/secrets/darwin-policies-json.age
index e1a202f..9fa2d2b 100644
Binary files a/secrets/darwin-policies-json.age and b/secrets/darwin-policies-json.age differ
diff --git a/secrets/network-information.age b/secrets/network-information.age
index 66c199c..0de69b7 100644
Binary files a/secrets/network-information.age and b/secrets/network-information.age differ
diff --git a/secrets/pihole.age b/secrets/pihole.age
index e7f0c78..babead9 100644
Binary files a/secrets/pihole.age and b/secrets/pihole.age differ
diff --git a/services/crowdsec.nix b/services/crowdsec.nix
new file mode 100644
index 0000000..f7e2e5a
--- /dev/null
+++ b/services/crowdsec.nix
@@ -0,0 +1,90 @@
+{ pkgs, config, ... }:
+let
+  crowdsec-url = "127.0.0.1:2763";
+  firewall-bouncer-name = "fw-bouncer";
+  # Although this key can be reproduced by anyone who actually cares to, the
+  # Crowdsec API will not be exposed to the outside world, so keeping this key
+  # super secret really isn't that important to me. Still make it look random
+  # so that hungry botnets can't just slurp up the password in plaintext.
+  firewall-bouncer-key = builtins.hashString "sha256"
+    "${config.networking.hostName}-crowdsec-bouncer-salt";
+  toMultiYAML = items:
+    pkgs.lib.concatMapStrings (item:
+      ''
+
+        ---
+      '' + (pkgs.lib.generators.toYAML { } item) + "\n") items;
+in {
+  services = {
+    crowdsec = {
+      enable = true;
+      settings = {
+        api.server = { listen_uri = crowdsec-url; };
+        allowLocalJournalAccess = true;
+        crowdsec_service.acquisition_path = pkgs.writeText "acquisitions.yaml"
+          (toMultiYAML [
+            {
+              source = "journalctl";
+              journalctl_filter = [ "_SYSTEMD_UNIT=sshd.service" ];
+              labels.type = "syslog";
+            }
+            {
+              filenames = [ "/var/log/auth.log" ];
+              labels.type = "syslog";
+            }
+            {
+              filenames = [ "/var/log/syslog" "/var/log/kern.log" ];
+              labels.type = "syslog";
+            }
+          ]);
+      };
+    };
+    crowdsec-firewall-bouncer = {
+      enable = true;
+      settings = {
+        api_url = firewall-bouncer-name;
+        api_key = firewall-bouncer-key;
+      };
+    };
+  };
+
+  systemd.services.crowdsec.serviceConfig = {
+    ExecStartPre = let
+      bouncer-script = pkgs.writeScriptBin "register-bouncer" ''
+        #!${pkgs.runtimeShell}
+        set -eu
+        set -o pipefail
+
+        if ! cscli bouncers list | grep -q "${firewall-bouncer-name}"; then
+          cscli bouncers add "${firewall-bouncer-name}" --key "${firewall-bouncer-key}"
+        fi
+      '';
+      collection-check = collection: ''
+
+        if ! cscli collections list | grep -q "${collection}"; then
+          cscli collections install "${collection}"
+        fi
+
+      '';
+      collections = [
+        "crowdsecurity/base-http-scenarios"
+        "crowdsecurity/http-cve"
+        "crowdsecurity/http-dos"
+        "crowdsecurity/iptables"
+        "crowdsecurity/linux"
+        "crowdsecurity/sshd"
+        "crowdsecurity/whitelist-good-actors"
+      ];
+      collection-script = pkgs.writeScriptBin "install-collections" ''
+        #!${pkgs.runtimeShell}
+        set -eu
+        set -o pipefail
+
+        ${pkgs.lib.concatMapStrings collection-check collections}
+      '';
+    in [
+      "${bouncer-script}/bin/register-bouncer"
+      "${collection-script}/bin/install-collections"
+    ];
+  };
+}
diff --git a/systems/linux/mcentire.nix b/systems/linux/mcentire.nix
index 6ee0ae4..07135d1 100644
--- a/systems/linux/mcentire.nix
+++ b/systems/linux/mcentire.nix
@@ -4,6 +4,7 @@
   imports = [ # Include the results of the hardware scan.
     ./hardware-configuration/mcentire.nix
     ./../../services/nixos-update.nix
+    ./../../services/crowdsec.nix
   ];
 
   # Use the GRUB 2 boot loader.