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CHAPTER 4. NETWORK CONFIGURATION 20
4.2 Routing
4.2.1 Routing parameters
There are multiple configuration options that define the routing on Arctic 3G:
• Ethernet WAN - Gateway (IP address)
– IP address of router used to reach the internet. Leave empty if unused.
• Ethernet WAN - Backup Gateway (IP address)
– IP address of backup router used to reach the internet. Leave empty if unused.
• WAN Failover - WAN Default Route (selection: Yes/No)
– Usually ”Yes” if default route is defined by ”static routes”. If the selection logic is done on VPN level
select ”No”
• WAN Failover - On Demand (selection: Yes/No)
– Select ”Yes” to activate the backup interfaces only when required. Select ”No” to have all the WAN
interfaces to be available simultaneously for e.g. VPNs.
• WAN Failover - Primary WAN Interface (selection: None/Mobile WAN/Ethernet WAN/Ethernet WAN
Secondary)
• WAN Failover - Backup WAN Interface(selection: None/Mobile WAN/Ethernet WAN/Ethernet WAN Sec-
ondary)
• WAN Failover - Secondary Backup WAN Interface (selection: None/Mobile WAN/Ethernet WAN/Ethernet
WAN Secondary)
– These three settings configure the high level default gateways. Must be configured to enable default
route.
• OpenVPN Client Settings - Interface (selection: Any WAN/Ethernet WAN/Wireless WAN/Ethernet LAN)
– Which Interface to use for connection
• OpenVPN Client Settings - Routing mode (selection: None/host/net/default route)
– This defines how the routing is configured with OpenVPN. See OpenVPN application note.
4.2.2 Default route
Default route can be configured from WAN Failover screen. See section 4.1.4.
4.2.3 WAN redundancy/failover
To configure redundancy between WAN interfaces, configure multiple WAN interfaces to WAN Failover. See
section 4.1.4.
4.2.4 Routing serial <-> Ethernet
See section 5.1 for configuring serial gateway.
4.3 Network services
4.3.1 DNS proxy
DNS proxy allows the Arctic 3G to act as a DNS server to devices connected to Ethernet LAN. The configuration
is located in Services->Common screen.
To use this feature, configure the device to use Arctic 3G Ethernet LAN IP address as its DNS server. This
way the DNS queries from the device get routed thorough the Arctic 3G.