diff --git a/config/portunus_seeds.json b/config/portunus_seeds.json
new file mode 100644
index 0000000..dc28aba
--- /dev/null
+++ b/config/portunus_seeds.json
@@ -0,0 +1,39 @@
+{
+	"groups": [
+		{
+			"name": "admins",
+			"long-name": "Portunus Admins",
+			"members": ["admin"],
+			"permissions": {
+				"portunus": { "is-admin": true },
+				"ldap": { "can-read": true }
+			}
+		},
+		{
+			"name": "ifsr",
+			"long-name": "Mitglieder des ifsr",
+			"members": [],
+			"permissions": {
+				"portunus": { "is-admin": false },
+				"ldap": { "can-read": false }
+			}
+		},
+		{
+			"name": "strukturer",
+			"long-name": "Strukturer des ifsr",
+			"members": [],
+			"permissions": {
+				"portunus": { "is-admin": false },
+				"ldap": { "can-read": false }
+			}
+		}
+	],
+	"users": [
+		{
+			"login_name": "admin",
+			"given_name": "admin",
+			"family_name": "admin",
+			"password": { "from_command": ["/usr/bin/env", "cat", "/run/secrets/portunus_admin"] }
+		}
+	]
+}
diff --git a/flake.lock b/flake.lock
index 7698a4f..714027c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -69,34 +69,34 @@
         "type": "github"
       }
     },
-    "nixpkgs-22_05": {
+    "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1668307144,
-        "narHash": "sha256-uY2StvGJvTfgtLaiz3uvX+EQeWZDkiLFiz2vekgJ9ZE=",
+        "lastModified": 1670146390,
+        "narHash": "sha256-XrEoDpuloRHHbUkbPnhF2bQ0uwHllXq3NHxtuVe/QK4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "eac99848dfd869e486573d8272b0c10729675ca2",
+        "rev": "86370507cb20c905800527539fc049a2bf09c667",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-22.05",
+        "ref": "release-22.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1668595291,
-        "narHash": "sha256-j8cyfbtT5sAYPYwbERgTDzfD48ZernL0/V668eGpXAM=",
+        "lastModified": 1671215800,
+        "narHash": "sha256-2W54K41A7MefEaWzgL/TsaWlhKRK/RhWUybyOW4i0K8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "6474d93e007e4d165bcf48e7f87de2175c93d10b",
+        "rev": "9d692a724e74d2a49f7c985132972f991d144254",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-22.05",
+        "ref": "nixos-22.11",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -113,14 +113,14 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "nixpkgs-22_05": "nixpkgs-22_05"
+        "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1668311578,
-        "narHash": "sha256-nF6mwSbVyvnlIICWFZlADegWdTsgrk1pZnA/0VqByNw=",
+        "lastModified": 1670149631,
+        "narHash": "sha256-rwmtlxx45PvOeZNP51wql/cWjY3rqzIR3Oj2Y+V7jM0=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "39f0fe57f1ef78764c1abc1de145f091fee1bbbb",
+        "rev": "da98a111623101c64474a14983d83dad8f09f93d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 2f5f766..fee070a 100755
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = github:nixos/nixpkgs/nixos-22.05;
+    nixpkgs.url = github:nixos/nixpkgs/nixos-22.11;
     sops-nix.url = github:Mic92/sops-nix;
     sops-nix.inputs.nixpkgs.follows = "nixpkgs";
     fsr-infoscreen.url = github:fsr/infoscreen;
@@ -59,6 +59,7 @@
             ./modules/options.nix
             ./modules/base.nix
             ./modules/sops.nix
+            ./modules/ldap.nix
             # ./modules/keycloak.nix replaced by portunus
             ./modules/nginx.nix
             ./modules/hedgedoc.nix
diff --git a/modules/ldap.nix b/modules/ldap.nix
new file mode 100644
index 0000000..7d39bea
--- /dev/null
+++ b/modules/ldap.nix
@@ -0,0 +1,67 @@
+{ config, ... }:
+let
+  domain = "auth.${config.fsr.domain}";
+
+  portunusUser = "portunus";
+  portunusGroup = "portunus";
+
+  ldapUser = "openldap";
+  ldapGroup = "openldap";
+in
+{
+  users.users."${portunusUser}" = {
+    isSystemUser = true;
+    group = "${portunusGroup}";
+  };
+
+  users.groups."${portunusGroup}" = {
+    name = "${portunusGroup}";
+    members = [ "${portunusUser}" ];
+  };
+
+  users.users."${ldapUser}" = {
+    isSystemUser = true;
+    group = "${ldapGroup}";
+  };
+
+  users.groups."${ldapGroup}" = {
+    name = "${ldapGroup}";
+    members = [ "${ldapUser}" ];
+  };
+
+  sops.secrets."portunus_admin" = {
+    owner = "${portunusUser}";
+    group = "${portunusGroup}";
+  };
+
+  services.portunus = {
+    enable = true;
+    user = "${portunusUser}";
+    group = "${portunusGroup}";
+    domain = "${domain}";
+    ldap = {
+      user = "${ldapUser}";
+      group = "${ldapGroup}";
+      suffix = "dc=ifsr,dc=de";
+      tls = true;
+    };
+
+    seedPath = ../config/portunus_seeds.json;
+  };
+
+  services.nginx = {
+    enable = true;
+    virtualHosts."${config.services.portunus.domain}" = {
+      forceSSL = true;
+      enableACME = true;
+      locations = {
+        "/".proxyPass = "http://localhost:${toString config.services.portunus.port}";
+      };
+    };
+  };
+
+  networking.firewall.allowedTCPPorts = [
+    80 # http
+    443 # https
+  ];
+}
diff --git a/secrets/quitte.yaml b/secrets/quitte.yaml
index 5feab36..716bca9 100644
--- a/secrets/quitte.yaml
+++ b/secrets/quitte.yaml
@@ -4,6 +4,7 @@ postgres_nextcloud: ENC[AES256_GCM,data:Lv0Ld3sf+hoUE2qrsf9qGSYf5aVLqm5GIbK2hEoR
 nextcloud_adminpass: ENC[AES256_GCM,data:EMvcFOGJz45P4nvJ5Yy4SziWa2pUWBqt4ZZdde6wegk=,iv:tG9bhB7HPprZMnfV/uC/v7fqmjQd5d4Oj5avOtK2/0A=,tag:8jBDpnahwQsXsD2Ivf6jDw==,type:str]
 hedgedoc_session_secret: ENC[AES256_GCM,data:uz7KggZqeZ2eqiCnOcnYh2I1p5BBXTQbC8PUhB2kM2U=,iv:aJDHKCPkccCT/OF6AGZMfRESNmoV9muGHbuCUfLQhH8=,tag:uEVXylpE8MSebqRr+4mQOw==,type:str]
 wg-seckey: ENC[AES256_GCM,data:NHk6E5uu3CshC/0//LoGk6iCGKWbx49wVVkjoMqF19gc7MhdHAn9aJD+0Zc=,iv:N3PuU7+QSW9aD0ZhTI7CmMI3drLIzO7XaW3mgEDp/sk=,tag:fxH4eRIboy9O15oul7JOTw==,type:str]
+portunus_admin: ENC[AES256_GCM,data:bPuYdfpWJtYib9lUcXHVZeGerskd5vs5IOe+DE9Q7OOPkAwp,iv:6ZjjfQ3E1xxYjmEg7o849RZzUt8dyXjI84DSfPYGUWQ=,tag:JJpOLjPs8YdEBl3xGGAzbg==,type:str]
 mediawiki:
     postgres: ENC[AES256_GCM,data:XRfUc2PRMJcoILAnm5MWr2Cg5u4e/IhGMUnz/oIQSzY=,iv:8U+qlD1SQzxUyD/6QK4SdwRCDyMODK/lP0IDrLlcQ4U=,tag:2spNMj9dY2wWilOusq24yQ==,type:str]
     initial_admin: ENC[AES256_GCM,data:iET5rz9rygx49NDBjKwqAlRgpeS+jq5iM5zmjnoKcyk=,iv:11iDbCrpzjCdyAB22R8NknJ6vzcpVZXCXB3iWsGWXw0=,tag:1RCyg1ysOWaXKdqqdHqRrw==,type:str]
@@ -23,8 +24,8 @@ sops:
             Z212K3JDWmRsZmVpdjBaUE1kL3phMm8K/x3Ssn0LEO7BfTUoOJQ6h88vlwA/AvQj
             KsosHSWO7vsgqKPPO+OPbHV1y8OTAKubcrk5szTUWBNOvggIw3nWDA==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2022-11-18T15:28:28Z"
-    mac: ENC[AES256_GCM,data:+o08gLLG3tz9uheJOMeKWtdvcRjgdcpOFUjSW3sHdFWC/FM5dcwDgBAtTO3/pPB6+e//SfpZgIWq1EASpgChPmE61K0U1lnYK/5gBY1QMDZ9tLgl8VjQ1ShVSeTL/dLWopBEVeDT0cR8jhJ+MIaVTEzMLK8I2qn/LaZqEktMPSg=,iv:N5TPSuijpULToU4EoZ7P6bL0sMZ1Jfu10Jxmnpzh4Ec=,tag:UIHIM+CMNS70ivKtEzbR3w==,type:str]
+    lastmodified: "2022-12-17T17:42:18Z"
+    mac: ENC[AES256_GCM,data:qLBASH8XmcHjTFrxdEqyk7KwXHEGx9hT6Jvqw1JMtZDhP95OjKNRySh5fptG1+Jz1ZIaG5zwDWdzV2/GXGru06dDR8bZYoXCboa0YR1NSESZ9f95n9v1HYQf/oSww8KHTP3METZ/1oS7i1nQdL5FxLFTK+nx77uQ1VxX7Ztl85Y=,iv:jEWOsxeTamGGNVw8OXFQT9o5MIyE7EMPAYEdfQesLZw=,tag:vUZK+H93qUursPwfoTpEJg==,type:str]
     pgp:
         - created_at: "2022-11-18T16:37:48Z"
           enc: |