diff --git a/bbs/board.php b/bbs/board.php
index 61034e624..ff0bc72b2 100644
--- a/bbs/board.php
+++ b/bbs/board.php
@@ -134,7 +134,7 @@ if (isset($wr_id) && $wr_id) {
         if ($member['mb_id'])
             alert('목록을 볼 권한이 없습니다.', G4_URL);
         else
-            alert('목록을 볼 권한이 없습니다.\\n\\n회원이시라면 로그인 후 이용해 보십시오.', './login.php?wr_id='.$wr_id.$qstr.'&url='.urlencode(G4_BBS_URL.'/board.php?bo_table='.$bo_table.'&wr_id='.$wr_id.$qstr));
+            alert('목록을 볼 권한이 없습니다.\\n\\n회원이시라면 로그인 후 이용해 보십시오.', './login.php?'.$qstr.'&url='.urlencode(G4_BBS_URL.'/board.php?bo_table='.$bo_table.'&'.$qstr));
     }
 
     if (!isset($page) || (isset($page) && $page == 0)) $page = 1;
diff --git a/bbs/login.php b/bbs/login.php
index 31f1ada32..390d2eb91 100644
--- a/bbs/login.php
+++ b/bbs/login.php
@@ -4,6 +4,8 @@ include_once('./_common.php');
 $g4['title'] = '로그인';
 include_once('./_head.sub.php');
 
+$url = $_GET['url'];
+
 $p = parse_url($url);
 if ((isset($p['scheme']) && $p['scheme']) || (isset($p['host']) && $p['host'])) {
     //print_r2($p);
@@ -19,31 +21,7 @@ if ($is_member) {
         goto_url(G4_URL);
 }
 
-if ($url)
-    $urlencode = urlencode($url);
-else
-    $urlencode = urlencode($_SERVER['REQUEST_URI']);
-
-if (G4_HTTPS_DOMAIN) {
-    $login_url = $_GET['url'];
-    if ($login_url) {
-        if (preg_match("/^\.\.\//", $url)) {
-            $login_url = urlencode(G4_URL."/".preg_replace("/^\.\.\//", "", $login_url));
-        } else {
-            $purl = parse_url(G4_URL);
-            if ($purl['path']) {
-                $path = urlencode($purl['path']);
-                $urlencode = preg_replace("/".$path."/", "", $urlencode);
-            }
-            $login_url = $urlencode;
-        }
-    } else {
-        $login_url = G4_URL;
-    }
-} else {
-    $login_url = $urlencode;
-}
-
+$login_url        = login_url($url);
 $login_action_url = G4_HTTPS_BBS_URL."/login_check.php";
 
 // 로그인 스킨이 없는 경우 관리자 페이지 접속이 안되는 것을 막기 위하여 기본 스킨으로 대체
diff --git a/bbs/memo_form_update.php b/bbs/memo_form_update.php
index 6c587a064..20a38ce14 100644
--- a/bbs/memo_form_update.php
+++ b/bbs/memo_form_update.php
@@ -74,8 +74,8 @@ for ($i=0; $i<count($member_list['id']); $i++) {
 
 if ($member_list) {
     $str_nick_list = implode(',', $member_list['nick']);
-    alert($str_nick_list." 님께 쪽지를 전달하였습니다.", "./memo.php?kind=send", false);
+    alert($str_nick_list." 님께 쪽지를 전달하였습니다.", G4_HTTP_BBS_URL."/memo.php?kind=send", false);
 } else {
-    alert("회원아이디 오류 같습니다.", "./memo_form.php", false);
+    alert("회원아이디 오류 같습니다.", G4_HTTP_BBS_URL."/memo_form.php", false);
 }
 ?>
\ No newline at end of file
diff --git a/bbs/register.php b/bbs/register.php
index 5c17c6d6a..a6a9146dd 100644
--- a/bbs/register.php
+++ b/bbs/register.php
@@ -12,7 +12,7 @@ set_session("ss_mb_reg", "");
 $g4['title'] = '회원가입약관';
 include_once('./_head.php');
 
-$register_action_url = G4_HTTPS_BBS_URL.'/register_form.php';
+$register_action_url = G4_BBS_URL.'/register_form.php';
 include_once($member_skin_path.'/register.skin.php');
 
 include_once('./_tail.php');
diff --git a/bbs/register_form_update.php b/bbs/register_form_update.php
index 278fc7264..48218b4a3 100644
--- a/bbs/register_form_update.php
+++ b/bbs/register_form_update.php
@@ -346,7 +346,7 @@ if ($msg)
     echo '<script>alert(\''.$msg.'\');</script>';
 
 if ($w == "") {
-    goto_url(G4_BBS_URL.'/register_result.php');
+    goto_url(G4_HTTP_BBS_URL.'/register_result.php');
 } else if ($w == 'u') {
     $row  = sql_fetch(" select mb_password from {$g4['member_table']} where mb_id = '{$member['mb_id']}' ");
     $tmp_password = $row['mb_password'];
diff --git a/bbs/write.php b/bbs/write.php
index 198e58be9..7a9e329b7 100644
--- a/bbs/write.php
+++ b/bbs/write.php
@@ -377,7 +377,7 @@ $editor_html = editor_html('wr_content', $content, $is_dhtml_editor);
 include_once(G4_PATH.'/head.sub.php');
 include_once('./board_head.php');
 
-$action_url = G4_HTTPS_BBS_URL."/write_update.php";
+$action_url = https_url(G4_BBS_DIR)."/write_update.php";
 
 echo '<!-- skin : '.$board_skin_path.' -->';
 include_once ($board_skin_path.'/write.skin.php');
diff --git a/bbs/write_update.php b/bbs/write_update.php
index 914e7bfe9..32831a68d 100644
--- a/bbs/write_update.php
+++ b/bbs/write_update.php
@@ -623,7 +623,7 @@ if (!($w == 'u' || $w == 'cu') && $config['cf_email_use'] && $board['bo_use_emai
 delete_cache_latest($bo_table);
 
 if ($file_upload_msg)
-    alert($file_upload_msg, G4_HTTPS_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.'&amp;page='.$page.$qstr);
+    alert($file_upload_msg, G4_HTTP_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.'&amp;page='.$page.$qstr);
 else
-    goto_url(G4_HTTPS_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.$qstr);
+    goto_url(G4_HTTP_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.$qstr);
 ?>
diff --git a/common.php b/common.php
index 303b4be32..e2559c44e 100644
--- a/common.php
+++ b/common.php
@@ -163,14 +163,8 @@ ini_set("session.cookie_domain", G4_COOKIE_DOMAIN);
 
 @session_start();
 
-// 보안서버주소 설정
-if (G4_HTTPS_DOMAIN) {
-    define('G4_HTTPS_URL', G4_HTTPS_DOMAIN);
-    define('G4_HTTPS_BBS_URL', G4_HTTPS_DOMAIN.'/'.G4_BBS_DIR);
-} else {
-    define('G4_HTTPS_URL', G4_URL);
-    define('G4_HTTPS_BBS_URL', G4_BBS_URL);
-}
+define('G4_HTTP_BBS_URL',   https_url(G4_BBS_DIR, false));
+define('G4_HTTPS_BBS_URL',  https_url(G4_BBS_DIR, true));
 
 //==============================================================================
 // Mobile 모바일 설정
diff --git a/config.php b/config.php
index f006b663f..0d74b2afa 100644
--- a/config.php
+++ b/config.php
@@ -24,8 +24,8 @@ if (PHP_VERSION >= '5.3.0') {
 보안서버주소가 없다면 공란으로 두시면 되며 보안서버주소 뒤에 / 는 붙이지 않습니다.
 입력예) https://www.domain.com:443/gnuboard4s
 */
-define('G4_DOMAIN', ''); // 사용하지 않습니다.
-define('G4_HTTPS_DOMAIN', '');
+define('G4_DOMAIN', 'http://sir.co.kr:80/g4s');
+define('G4_HTTPS_DOMAIN', 'https://sir.co.kr/g4s');
 
 /*
 www.sir.co.kr 과 sir.co.kr 도메인은 서로 다른 도메인으로 인식합니다. 쿠키를 공유하려면 .sir.co.kr 과 같이 입력하세요.
@@ -53,26 +53,13 @@ define('G4_SNS_DIR',        'sns');
 define('G4_SYNDI_DIR',      'syndi');
 
 // URL 은 브라우저상에서의 경로 (도메인으로 부터의)
+
 if (G4_DOMAIN) {
     define('G4_URL', G4_DOMAIN);
 } else {
-    if (isset($g4_path['url']))
-        define('G4_URL', $g4_path['url']);
-    else
-        define('G4_URL', '');
-}
-
-if (G4_HTTPS_DOMAIN) {
-    define('G4_URL', G4_HTTPS_DOMAIN);
-} else {
-    define('G4_URL', G4_DOMAIN);
-}
-
-if (isset($g4_path['path'])) {
-    define('G4_PATH', $g4_path['path']);
-} else {
-    define('G4_PATH', '');
+    define('G4_URL', $g4_path['url']);
 }
+define('G4_PATH', $g4_path['path']);
 
 define('G4_ADMIN_URL',      G4_URL.'/'.G4_ADMIN_DIR);
 define('G4_BBS_URL',        G4_URL.'/'.G4_BBS_DIR);
diff --git a/lib/common.lib.php b/lib/common.lib.php
index b4999e858..708774565 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -1981,4 +1981,32 @@ function hyphen_hp_number($hp)
     $hp = preg_replace("/[^0-9]/", "", $hp);
     return preg_replace("/([0-9]{3})([0-9]{3,4})([0-9]{4})$/", "\\1-\\2-\\3", $hp);
 }
+
+
+function login_url($url='')
+{
+    if (!$url) $url = G4_URL;
+    $p = parse_url($url);
+    return $url.urldecode(preg_replace("/^".urlencode($p['path'])."/", "", urlencode($_SERVER['REQUEST_URI'])));
+}
+
+
+function https_url($dir, $https=true)
+{
+    if ($https) {
+        if (G4_HTTPS_DOMAIN) {
+            $url = G4_HTTPS_DOMAIN.'/'.$dir;
+        } else {
+            $url = G4_URL.'/'.$dir;
+        }
+    } else {
+        if (G4_DOMAIN) {
+            $url = G4_DOMAIN.'/'.$dir;
+        } else {
+            $url = G4_URL.'/'.$dir;
+        }
+    }
+
+    return $url;
+}
 ?>
\ No newline at end of file
diff --git a/lib/outlogin.lib.php b/lib/outlogin.lib.php
index f5621c13d..077a4bd5a 100644
--- a/lib/outlogin.lib.php
+++ b/lib/outlogin.lib.php
@@ -34,29 +34,7 @@ function outlogin($skin_dir='basic')
             $is_auth = true;
     }
 
-    if (G4_HTTPS_DOMAIN) {
-        $outlogin_url = $_GET['url'];
-        if ($outlogin_url) {
-            if (preg_match("/^\.\.\//", $outlogin_url)) {
-                $outlogin_url = urlencode(G4_URL."/".preg_replace("/^\.\.\//", "", $outlogin_url));
-            }
-            else {
-                $purl = parse_url(G4_URL);
-                if ($purl['path']) {
-                    $path = urlencode($purl['path']);
-                    $urlencode = preg_replace("/".$path."/", "", $urlencode);
-                }
-                $outlogin_url = $urlencode;
-            }
-        }
-        else {
-            $outlogin_url = G4_URL;
-        }
-    }
-    else {
-        $outlogin_url = $urlencode;
-    }
-
+    $outlogin_url        = login_url();
     $outlogin_action_url = G4_HTTPS_BBS_URL.'/login_check.php';
 
     ob_start();
diff --git a/plugin/ckeditor/ckeditor.lib.php b/plugin/ckeditor/ckeditor.lib.php
index ed4cf6013..6543f6513 100644
--- a/plugin/ckeditor/ckeditor.lib.php
+++ b/plugin/ckeditor/ckeditor.lib.php
@@ -36,7 +36,7 @@ function editor_html($id, $content, $ckeditor=true, $class="")
     }
 
     $ckeditor_class = $ckeditor ? "ckeditor" : "";
-    $html .= "\n<textarea id=\"$id\" name=\"$id\" class=\"$ckeditor_class $class\" style=\"width:100%;\" maxlength=\"65536\">$content</textarea>";
+    $html .= "\n<textarea id=\"$id\" name=\"$id\" class=\"$ckeditor_class $class required\" style=\"width:100%;\" required maxlength=\"65536\">$content</textarea>";
     $html .= "\n<span class=\"sound_only\">웹 에디터 끝</span>";
     return $html;
 }
diff --git a/skin/member/basic/memo_form.skin.php b/skin/member/basic/memo_form.skin.php
index 36e7dca11..9463b6634 100644
--- a/skin/member/basic/memo_form.skin.php
+++ b/skin/member/basic/memo_form.skin.php
@@ -13,7 +13,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
         <li><a href="./memo_form.php">쪽지쓰기</a></li>
     </ul>
 
-    <form name="fmemoform" action="./memo_form_update.php" onsubmit="return fmemoform_submit(this);" method="post" autocomplete="off">
+    <form name="fmemoform" action="<?php echo $memo_action_url; ?>" onsubmit="return fmemoform_submit(this);" method="post" autocomplete="off">
     <div class="cbox">
         <table class="frm_tbl">
         <caption>쪽지쓰기</caption>