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Multiple WAN Config for Sonicwall TZ205

We have a Sonicwall TZ-205 Firewall. It is currently setup to use one WAN IP from our Cablevision Modem. We recently purchase static IP's (5 Total) and we want to assign 2 of these IP's to two prots on the Sonicwall. Right now the X1 Port is set to the default WAN using the first IP in the range we have. When we try to setup the secondary port (X2) with the next available WAN IP we get an error that the subnet (255.255.255.248) is overlapping with the X1 port. Is there a way around this?

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Aaron Tomosky

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Ian Arakel

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Cheever000

As already stated, if you have IP addresses in the same subnet, then you can not put them on a new interface. They must be in the same network, that being said you also don't have to put them anywhere, when you NAT them to internal IP addresses the firewall will ARP for that IP address, and pass the traffic. The same is the case with a floating block, if it is assigned to your initial block you only need to NAT them to get the firewall to ARP. Perhaps you could present a sample subnet with the same make in the private range so we could understand the design need?

Thannks