diff --git a/daed/module.nix b/daed/module.nix
index 3333da8..5cca0b4 100644
--- a/daed/module.nix
+++ b/daed/module.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, pkgs, lib, ... }:
 
 let
   cfg = config.services.daed;
@@ -23,10 +23,26 @@ in
 
       listen = mkOption {
         type = types.str;
-        default = "0.0.0.0:2023";
+        default = "127.0.0.1:2023";
         description = "The daed listen address.";
       };
 
+      assetsPaths = mkOption {
+        type = with types; listOf str;
+        default = [
+          "${pkgs.v2ray-geoip}/share/v2ray/geoip.dat"
+          "${pkgs.v2ray-domain-list-community}/share/v2ray/geosite.dat"
+        ];
+        description = ''
+          Geo database required to run daed.
+          Notice that this defines different from `assetsPath` in dae module.
+          This will be linked into `configDir`.
+        '';
+        example = ''
+          ["/var/lib/dae/geoip.dat" "/home/who/geosite.dat"]
+        '';
+      };
+
       openFirewall = mkOption {
         type = with types; submodule {
           options = {
@@ -84,6 +100,13 @@ in
             "network-online.target"
           ];
 
+          preStart = ''
+            umask 0077
+            mkdir -p ${cfg.configDir}
+            ${lib.foldl' (acc: elem: acc + elem + "\n") "" 
+                (map (n: "ln -sfn ${n} ${cfg.configDir}")
+                  cfg.assetsPaths)}
+          '';
           serviceConfig = {
             Type = "simple";
             User = "root";
diff --git a/flake.nix b/flake.nix
index 04d078e..228405f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -59,7 +59,7 @@
             nixosModules = {
               ${n} = { pkgs, ... }: {
                 imports = [ ./${n}/module.nix ];
-                services.dae.package =
+                services.${n}.package =
                   withSystem pkgs.stdenv.hostPlatform.system ({ config, ... }:
                     config.packages.${n}
                   );