Last modified: 2013-10-23 18:17:34 UTC
When mediawiki (1.18) is installed via LAN, the local IP adress seems to be saved somewhere. External querys try to resolve the internal IP when retrieving subfolders.
fix $wgServer in localsettings.php from your LAN IP Adress to WAN IP adress
after setting $wgServer in localsettings.php to external IP Adress i wasn`t able to access via LAN anymore. (I can`t connect my own external IP, which might contingent on my hardware) External access worked fine. Deleting the $wgServer in localsettings.php works fine for me .