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Use one of the following Knowledge Base articles depending on what kind of internet connection you have for the backup connection.
- Setting up an Internet connection with static address assignment on a LANCOM R&S®Unified Firewall (cable Internet or SDSL)
- Setting up an Internet connection with dynamic IP address assignment per DHCP on a LANCOM R&S®Unified Firewall (cable Internet)
- Setting up an ADSL connection without specifying a VLAN ID on a LANCOM R&S®Unified Firewall (PPPoE)
- Setting up an ADSL or VDSL connection with a specified VLAN ID on a LANCOM R&S®Unified Firewall (PPPoE)
2) Go to the internet connection created in step 1), change to the tab Failover and activate the option Use as backup connection.
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