ใช้ htaccess กำหนดให้ลิ้งค์ไปยังหน้า maintenance

# MAINTENANCE-PAGE REDIRECT
<IfModule mod_rewrite.c>
 RewriteEngine on
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REQUEST_URI} !/maintenance.html$ [NC]
 RewriteCond %{REQUEST_URI} !.(jpe?g?|png|gif) [NC]
 RewriteRule .* /maintenance.html [R=302,L]
</IfModule>

# MAINTENANCE-PAGE REDIRECT
<IfModule mod_rewrite.c>
 RewriteEngine on
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REMOTE_ADDR} !^123.456.789.000
 RewriteCond %{REQUEST_URI} !^/dashboard [NC]
 RewriteCond %{REQUEST_URI} !/maintenance.html$ [NC]
 RewriteCond %{REQUEST_URI} !.(jpe?g?|png|gif) [NC]
 RewriteRule .* /maintenance.html [R=302,L]
</IfModule>