Part of the
Triarch system. A
PC running
QNX and two
TCP/IP stacks, which provides
network address translation from a client network to the
vendor network, as well as
DNS service for the
client-side NATed IP's of servers on the vendor network.
One reason for this is that the Triarch system is usually placed on totally private networks, which set up IP subnets without regard to Internet allocation. Therefore no one subnet could be used and be guaranteed to work on all customer sites, so a NATing box is provided. In order to easily access vendor services, the box provides DNS based on the NATed addresses.