Setting up secondary WAN with same subnet?
I have 2 WAN Connections for my facility. Both have static IP Addresses (Example: 220.127.116.11 & 18.104.22.168). These static addresses are provided to me by the ISP. I have the two WAN Connections coming into the SonicWALL, one as the primary and the secondary. Each WAN connection comes into my facility via different route for redundancy but make it back to the same router at the ISP.
The question is, since both addresses are on the same subnet, how can I add them both to the SonicWALL. When I try to setup the secondary connection it gives me the error (Error: Subnet on the interface overlaps with another interface). Any idea's on how I can make this work?
From what I was told the original setup for this facility was that there were two different circuits for the building. two 50mb connections and one was used for business purposes and one was used for guest services. The old administrator simply had two networks split and one was for guests and one for business. I've combined both so they could both be monitored by the firewall and that's where I'm running into this problem. The reason I need this to work is so I can have monitoring of the static IP. I forward all DNS requests to a government entity that watches the traffic to determine if people are accessing malicious sites and I receive a report every month. Since the SonicWALL has the two different connections, sometimes it uses the static address and then sometimes it uses DHCP because the two WAN connections are coming into the firewall. I just want all traffic coming out of the firewall to be on one of the two static addresses so they can be monitored.