Configuring with Web Based Management   
6.8 "Layer 3 (IPv4)" menu 
  SCALANCE W780/W740 to IEEE 802.11n Web Based Management 
354  Configuration Manual, 08/2018, C79000-G8976-C267-13 
1.  From the "Traffic Type" drop-down list, select the protocol for which the address 
assignment is valid. 
2.  Enter the number of the global port or a port range in "Global Port". 
3.  Enter the IP address of the node in the local network in ""Local IP Address". 
4.  Enter the number of the local port or a port range in "Local Port". 
5.  Click the "Create" button. A new entry is generated in the table. 
6.  Click the "Set Values" button. The device is restarted.