Monday, February 19, 2018

Bridging a subnet over a routed interface

As a heads up, we are working with two Sonicwall NSA 2600s over a WAN.

We work in the industrial controls sector, and one of our control system requires two specific subnets for the primary and secondary network. The ICS also handles (and requires) DHCP. Our development environment is hosted in a datacenter connected via VPN tunnel.

We need to connect controllers on those subnets in the office to servers on those subnets in the datacenter. Is it possible to route the Sonicwall's L2 Bridging protocol over the WAN? I can't think of any other way to extend that subnet on both sides without having a network conflict on the interfaces.

Primary: 10.4.0.0/15 Secondary: 10.8.0.0/15



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