Server Configuration
Proceed as follows:
Using the Configuration Manager (page Administration > IP Configuration)
Port of the webserver
Port 80 is used for accessing the web server by default. The address can thus be entered as follows: http://192.168.55.13, for example. Only when accessing via Ethernet the value (e. g. 8081 instead of 80) has to be entered when modifying the port (e. g. http://192.168.55.13:8081). A change of the port should be made for security reasons especially if the PBX has to be accessible from the Internet (via a router and a fixed IP address).
You can view the ports already configured on the Overview > Ports page.
* Caution: A port change will be made out of security reasons especially if the PBX has to be reachable from the Internet (via router and fixed IP address).
HTTPS port of the webserver
Port 443 is used for accessing the web server by default. The address can thus be entered as follows: http://192.168.55.13, for example. Only when accessing via Ethernet the value (e. g. 4432 instead of 443) has to be entered when modifying the port (e. g. https://192.168.55.13:8081). A change of the port should be made for security reasons especially if the PBX has to be accessible from the Internet (via a router and a fixed IP address).
You can view the ports already configured on the Overview > Ports page.
* Caution: A port change will be made out of security reasons especially if the PBX has to be reachable from the Internet (via router and fixed IP address).
Force HTTPS connection
The connection is carried out via HTTPS to secure the access to the Configuration Manager. An access via HTTP will be forwarded to HTTPS.
* Note: When switched off, the connection is carried out via HTTP.
Webserver access only within local network
For the increased security, the webserver access is limited to the local network.
API access only within local network
For the increased security, the API access is limited to the local network.
Increased security/Content Security Policy
The CSP header is activated. Cross-Site-Scripting attacks by foreign sources should be prevented by this.
* Note: Enabling this function can lead to problems in connection with some add-ons.
Configuration port for system phones
Enter the configuration port for system phones with the range 1 to 65535. It indicates which port on the PBX is used by the configuration software on the ISDN system phone during the transmission.
Language
Select the language.
Forced logout if no action happens after  Minutes (5..60)
The time lapse with the range 5 to 60 for a forced logout defines after how many minutes a user is automatically logged out of the Configuration Manager if no action has been taken in the Configuration Manager within a configured time period. If an action happens after the automatic logout, the user will see the page for a new login.
UPnP
If the UPnP service is installed and enabled on the PC being used, the PBX is identified and selected as a device with its name in the network environment.