Can the firewall WebUI be accessed from all interfaces?
For security reasons, the webUI can by default be accessed from the following interfaces: DFL-210/800: lan interface DFL-1600: lan1 (4th interface) DFL-2500: lan1 (6th interface) Go to System->Remote Management to change the setting, or to add remote management to other interfaces. It is possible to configure access to the webUI on all interfaces, including VPN interfaces.