A Friend of mine was testing something in our Server Room. He made a firewall Rule on the Zywalls' web-interface like this:
Block All from All to Zywall
So, now we cant access the Webpannel anymore (logic..) ATM we can only access the Servers behind it (We aren't physically there) and we need to change a Port-forwarding.. is there any other way to access the ZyWall and delete this Rule?