Add minimal configuration

modules/datasync.nix

@@ -0,0 +1,30 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.samba = {
+    enable = true;
+    securityType = "share";
+    nsswins = true;
+    extraConfig = ''
+      workgroup = WORKGROUP
+      server string = samba
+      netbios name = samba
+      security = ${config.services.samba.securityType}
+      hosts allow = 192.168.1  localhost
+      hosts deny = 0.0.0.0/0
+      guest account = nobody
+      map to guest = bad user
+    '';
+    shares.public = {
+      # FIXME Change path accordingly
+      sharepath = "/mnt/Shares/Public";
+      browseable = "yes";
+      "read only" = "no";
+      "guest ok" = "yes";
+      "create mask" = "0644";
+      "directory mask" = "0755";
+      "force user" = "nobody";
+      "force group" = "nobody";
+    };
+  };
+}

modules/networking.nix

@@ -0,0 +1,26 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Enable zeroconf
+  services.avahi = {
+    enable = true;
+    nssmdns = true;
+    publish = {
+      enable = true;
+      userServices = true;
+      domain = true;
+      workstation = true;
+    };
+    reflector = true;
+  };
+
+  # Firewall configuration
+  networking.firewall = {
+    # Samba
+    allowedTCPPorts = [ 445 139 ];
+    allowedUDPPorts = [ 137 138 ];
+  };
+
+  # Disable IPv6
+  networking.enableIPv6 = false;
+}