Setup mail server and restructure some things

config/hosts/coturn/acme.nix

@@ -0,0 +1,10 @@
+{ ... }:
+{
+  security.acme.certs = {
+    "turn.nekover.se" = {
+      listenHTTP = ":80";
+      group = "turnserver";
+      reloadServices = [ "coturn.service" ];
+    };
+  };
+}

config/hosts/coturn/configuration.nix

@@ -0,0 +1,22 @@
+{ config, ... }:
+{
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/vda";
+  };
+
+  networking = {
+    hostName = "coturn";
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 80 3478 5349 ];
+      allowedUDPPorts = [ 3478 5349 ];
+      allowedUDPPortRanges = [{
+        from = config.services.coturn.min-port;
+        to = config.services.coturn.max-port;
+      }];
+    };
+  };
+
+  system.stateVersion = "23.05";
+}

config/hosts/coturn/coturn.nix

@@ -0,0 +1,45 @@
+{ config, ... }:
+{
+  services.coturn = {
+    enable = true;
+    min-port = 49200;
+    max-port = 49500;
+    use-auth-secret = true;
+    static-auth-secret-file = "/secrets/static-auth-secret.secret";
+    realm = "turn.nekover.se";
+    cert = "${config.security.acme.certs."turn.nekover.se".directory}/fullchain.pem";
+    pkey = "${config.security.acme.certs."turn.nekover.se".directory}/key.pem";
+    no-tcp-relay = true;
+    no-cli = true;
+    extraConfig = ''
+      external-ip=170.133.2.81/10.202.41.118
+      prometheus
+      syslog
+
+      no-tlsv1
+      no-tlsv1_1
+
+      denied-peer-ip=10.0.0.0-10.255.255.255
+      denied-peer-ip=192.168.0.0-192.168.255.255
+      denied-peer-ip=172.16.0.0-172.31.255.255
+
+      no-multicast-peers
+      denied-peer-ip=0.0.0.0-0.255.255.255
+      denied-peer-ip=100.64.0.0-100.127.255.255
+      denied-peer-ip=127.0.0.0-127.255.255.255
+      denied-peer-ip=169.254.0.0-169.254.255.255
+      denied-peer-ip=192.0.0.0-192.0.0.255
+      denied-peer-ip=192.0.2.0-192.0.2.255
+      denied-peer-ip=192.88.99.0-192.88.99.255
+      denied-peer-ip=198.18.0.0-198.19.255.255
+      denied-peer-ip=198.51.100.0-198.51.100.255
+      denied-peer-ip=203.0.113.0-203.0.113.255
+      denied-peer-ip=240.0.0.0-255.255.255.255
+
+      allowed-peer-ip=10.202.41.118
+
+      user-quota=12
+      total-quota=1200
+    '';
+  };
+}

config/hosts/coturn/default.nix

@@ -0,0 +1,8 @@
+{ ... }:
+{
+  imports = [
+    ./configuration.nix
+    ./acme.nix
+    ./coturn.nix
+  ];
+}

config/hosts/coturn/secrets.nix

@@ -0,0 +1,11 @@
+{ ... }:
+{
+  deployment.keys."static-auth-secret.secret" = {
+    keyCommand = [ "env" "GNUPGHOME=/home/yuri/.passinfra_gnupg" "PASSWORD_STORE_DIR=/home/yuri/pass/infra" "pass" "coturn/static-auth-secret" ];
+    destDir = "/secrets";
+    user = "turnserver";
+    group = "turnserver";
+    permissions = "0640";
+    uploadAt = "pre-activation";
+  };
+}