coturn init

configuration.nix

@@ -27,14 +27,6 @@
 
   # Enable networking
   networking.networkmanager.enable = true;
-  services.tailscale = {
-    enable =true;
-    useRoutingFeatures = "server";
-    extraUpFlags = [
-      "--advertise-exit-node"
-      "--exit-node"
-    ];
-  };
 
   # Set your time zone.
   time.timeZone = "Europe/Stockholm";

coturn.nix

@@ -0,0 +1,72 @@
+{config, ...}: {
+  # enable coturn
+  services.coturn = rec {
+    enable = true;
+    no-cli = true;
+    no-tcp-relay = true;
+    min-port = 49000;
+    max-port = 50000;
+    use-auth-secret = true;
+    static-auth-secret-file = "/etc/nixos/.secrets/coturn.secret";
+    realm = "turn.sondell.org";
+    cert = "${config.security.acme.certs.${realm}.directory}/full.pem";
+    pkey = "${config.security.acme.certs.${realm}.directory}/key.pem";
+    extraConfig = ''
+      # for debugging
+      # verbose
+
+      # ban private IP ranges
+      no-multicast-peers
+      denied-peer-ip=0.0.0.0-0.255.255.255
+      denied-peer-ip=10.0.0.0-10.255.255.255
+      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=172.16.0.0-172.31.255.255
+      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=192.168.0.0-192.168.255.255
+      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
+      denied-peer-ip=::1
+      denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff
+      denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255
+      denied-peer-ip=100::-100::ffff:ffff:ffff:ffff
+      denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff
+      denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+      denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+      denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+    '';
+  };
+  # open the firewall
+  networking.firewall = {
+    interfaces.enp2s0 = let
+      range = with config.services.coturn; [ {
+      from = min-port;
+      to = max-port;
+    } ];
+    in
+    {
+      allowedUDPPortRanges = range;
+      allowedUDPPorts = [ 3478 5349 ];
+      allowedTCPPortRanges = [ ];
+      allowedTCPPorts = [ 3478 5349 ];
+    };
+  };
+  # get a certificate
+  security.acme.certs.${config.services.coturn.realm} = {
+    /* insert here the right configuration to obtain a certificate */
+    postRun = "systemctl restart coturn.service";
+    group = "turnserver";
+  };
+  # configure synapse to point users to coturn
+  services.matrix-synapse = with config.services.coturn; {
+    turn_uris = ["turn:${realm}:3478?transport=udp" "turn:${realm}:3478?transport=tcp"];
+    turn_shared_secret = static-auth-secret;
+    turn_user_lifetime = "1h";
+  };
+}
+

flake.nix

@@ -14,6 +14,8 @@
         ./jellyfin.nix 
         ./filebrowser.nix
         ./matrix.nix
+        ./tail.nix
+        ./coturn.nix
       ];
 
     };

tail.nix

@@ -0,0 +1,11 @@
+{ config, ... }:
+{
+  services.tailscale = {
+    enable =true;
+    useRoutingFeatures = "both";
+    extraUpFlags = [
+      "--advertise-exit-node"
+      "--exit-node"
+    ];
+  };
+}