diff --git a/common.php b/common.php
index 66eef1ed5..8a8b3b7f8 100644
--- a/common.php
+++ b/common.php
@@ -453,9 +453,9 @@ if ($is_admin != 'super') {
             if (empty($pattern[$i]))
                 continue;
 
-            //$pat = "/({$pattern[$i]})/";
             $pattern[$i] = str_replace(".", "\.", $pattern[$i]);
-            $pat = "/^{$pattern[$i]}/";
+            $pattern[$i] = str_replace("+", "[0-9\.]+", $pattern[$i]);
+            $pat = "/^{$pattern[$i]}$/";
             $is_possible_ip = preg_match($pat, $_SERVER['REMOTE_ADDR']);
             if ($is_possible_ip)
                 break;
@@ -473,7 +473,8 @@ if ($is_admin != 'super') {
             continue;
 
         $pattern[$i] = str_replace(".", "\.", $pattern[$i]);
-        $pat = "/^{$pattern[$i]}/";
+        $pattern[$i] = str_replace("+", "[0-9\.]+", $pattern[$i]);
+        $pat = "/^{$pattern[$i]}$/";
         $is_intercept_ip = preg_match($pat, $_SERVER['REMOTE_ADDR']);
         if ($is_intercept_ip)
             die ("접근 불가합니다.");