Temporarily is not possible yet. If you are afraid of enabling ANY to gain access from Internet, is there a chance to use DynDNS on your internet client (if it's for example your home PC) ? Then you could create a definition for this host and allow access to WebAdmin.
I've used the advice from billybob, but i still get a "connection refused" from outside. I've asked for a quick way, because of i have only access via "human remote interface via phone" to the webadmin page. Unfortunately the "human interface" at the other end didn't have the suitable skills.
So, i have to set a rule also to get access? The system/webadmin setting from post #2 isn't enough?
BTW: Dyndns is in place.
Webadmin is running on Port 443 (https) and the astaro box is the only device which is NATing
Webadmin itself is accessible from inside the LAN. The only change was adding "any" to accessible networks......
Are you by chance forwarding 443 to a web server inside your net? Try changing the web admin default port. Make sure webmin is listening on your external interface. Remember to write the new port down first in case you forget it.