Configuring network interfaces Configure mobile (cellular) interfaces
Digi TransPort® Routers User Guide
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Re-establish connection when no data is received for a period of time.
Sets up an inactivity timer to trigger a reconnection when no packets are received for a period
of time.
Inactivity Timeout: h hrs m mins s seconds
The amount of time the router waits without receiving any PPP packets before disconnecting.
This inactivity timeout is reset with each received PPP packet.
5. Configure the mobile network settings:
Enable NAT on this interface
Enables or disables IP Network Address Translation (NAT) on the mobile interface. When
enabled, displays the following options:-
IP Address
Enables standard Network Address Translation (NAT).
IP address and Port
Enables Network Address and Port Translation (NAPT).
Enable IPsec on this interface
Enables or disables IPSec processing on the mobile interface. If enabled, packets sent or
received on this interface must pass through the IPSec code before being transmitted. IPSec
may drop the packet, pass it unchanged, or encrypt and encapsulate within an IPSec packet.
When enabled, displays the following parameters:-
Keep Security Associations (SAs) when this Mobile interface is disconnected
Configures the router to keep any existing IKE and IPsec associations should the link drop. This
is usually applied on head-end routers with fixed IP addresses.
Use interface X, Y for the source IP address of IPsec packets
By default, the source IP address for an IPSec eroute will be the IP address of the interface on
which IPSec was enabled. By setting this parameter to either a PPP or Ethernet interface, the
source IP address IPSec uses will match that of the Ethernet or PPP interface specified.
Enable the firewall on this interface
Enables or disables the firewall script processing for the mobile interface.
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