Digi TransPort WR31 - Page 464

Configure Virtual Private Networking (VPN) OpenVPN parameters
Digi TransPort WR Routers User Guide 464
Get link socket source address from this interface x,y
The values in these two text boxes define the interface (Auto, PPP, ETH) and the instance
number of the interface to use as a source address for IP sockets when not using the interface
that the socket was created on.
Even when this parameter is not configured, the router uses the IP address from the interface on
which the socket was created. It uses the source address specified in this parameter only if it will
cause the traffic to match an Eroute and therefore be sent using IPsec or GRE.
MTU
Used to set the Maximum Transmit Unit for the OpenVPN instance, in bytes. The default setting
is 1400.
Metric
The connected metric, changing this value will alter the metric of dynamic routes created
automatically for this interface.
NAT mode
Selects whether to use IP Network Address Translation (NAT) or Network Address and Port
Translation (NAPT) at the Ethernet interface. When the parameter is set to disabled, no NAT will
occur.
IP analysis
When enabled, the un-encapsulated IP traffic will be captured into the analyser trace.
Firewall
Enables or disables Firewall script processing for this interface.
IGMP
Enables or disables the transmission and reception of IGMP packets on this interface. IGMP
advertises members of multicast groups. If IGMP is enabled, and a member of a multicast group
is discovered on this interface, multicast packets for this group received on other interfaces are
sent out this interface.
Include in RIP advertisements
When enabled, the router includes this static route in RIP advertisements.
Automatically connect interface
If enabled, this OpenVPN instance will be considered as an Always On interface.
Server mode (listener)
Configures the OpenVPN instance to listen for inbound OpenVPN sockets.