Devices can't connect to Mobility server (multiple nic on different subnets)

  • 7015734
  • 02-Oct-2014
  • 02-Oct-2014

Environment

Novell GroupWise Mobility Service
Novell Data Synchronizer Mobility Pack

Situation

Devices can't connect to Mobility server (multiple nic on different subnets)
Multiple Ethernet connections configured for the server: i.e. eth0 inside the DMZ and eth1 inside the Internal network.
DMZ network and Internal network interfaces

Resolution

There are some cases where it is desired to have multiple network interface cards in a single server all connected to separate networks.  By default, any packet received on one of the network cards is going to travel out the default gateway to the network.  To ensure that the server responds on the same interface to which the packet came, policy based routing must be used (configuring multiple default routes). 

Cause

Server receives packets from the outside, but since the default route is the internal network, responses are never sent back to devices.

Additional Information

Ask Novell Support for information regarding an internal document to help configure multiple default routes on linux.

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