Digi TransPort WR31 User Manual page 232

Configure network interfaces
Enable IPsec on this interface
Enables or disables IPSec processing on the ISDN 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 ISDN 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 is 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 specified Ethernet or PPP interface.
Enable the firewall on this interface
Enables or disables the Firewall script processing for the mobile interface.
Note If the firewall is enabled on an interface and with the absence of any firewall rules, the
default action is to block ALL traffic. To configure the firewall, refer to the
Digi TransPort WR Routers User Guide
Configure ISDN interfaces
Firewall section.
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