diff --git a/functions.php b/functions.php
index c19a435..4261f85 100644
--- a/functions.php
+++ b/functions.php
@@ -137,6 +137,14 @@ function redis_remove($key) {
 	}
 }
 
+function get_vpn_url($domain,$passkey) {
+
+	$date = gmdate("Ymd");
+	$hash = hash("sha256",$passkey*$date);
+	$url = $domain."/".$passkey."/secret";
+	return $url;
+}
+
 // not in use
 function put_install_envs() {
 
diff --git a/install.php b/install.php
index 9991796..6e1b199 100644
--- a/install.php
+++ b/install.php
@@ -12,6 +12,15 @@ if ($_POST["SMARTHOST_PROXY"]=="Y") {
 
 }
 
+if ($_POST["VPN_PROXY"]=="Y") {
+	$vpnkey_url = get_vpn_url($_POST["VPN_DOMAIN"],$_POST["VPN_KEY"]);
+	// DEBUG
+
+	echo $vpnkey_url;
+	echo "<br>";
+	echo file_get_contents($vpnkey_url);
+}
+
 if ($_POST["DISCOVERY"]=="yes") {
 	if ($_POST["DISCOVERY_DIR"] == "" ) $_POST["DISCOVERY_DIR"]="/usr/local/bin/";
 	if (substr($_POST["DISCOVERY_DIR"],0,1)!="/") {