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SonicWall TZ 105 multiple public IP addresses

Posted on 2014-07-25
Medium Priority
Last Modified: 2016-11-23
I have a Dell SonicWall TZ 105 appliance configured and running in a small office.

The SonicWall is connected to a Comcast Business Gateway Router.

We have 5 static public IP addresses with Comcast.

The internal Address of the Comcast router is

I configured the SonicWall to use as it's WAN address.
The internal address of the SonicWall is

I am passing the following ports through from the Comcast Router to the SonicWall ( -

443 - VPN - Used by the SonicWall for VPN services.
21 - FTP - Forwarded by the SonicWall to an internal ftp server.
80 - HTTP - Forwarded by the SonicWall to an internal web server.

All of this is working fine, but now I wish to use a 2nd public IP address and pass it through.
On the Comcast router I added a 1 to 1 NAT that passes one of the available public IPs to

Now I assume I have to create a Virtual Interface on the SonicWall that connects to ?
And then I somehow route the proper ports to the internal server that is at ?

Am I on the right track?  
Any suggestions on how to proceed would be greatly appreciated.
Or can anyone recommend documentation that helps explain what I am trying to do?

Question by:kevinvw1
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LVL 32

Accepted Solution

nappy_d earned 2000 total points
ID: 40221344
Hi here is a tech article from sonicwall describing the configuration you seek. It shows how to brush the wan into passthrough mode for all of your public ip addresses.

LVL 39

Expert Comment

by:Aaron Tomosky
ID: 40221589
Agreed, don't do this double nat setup, move to pass through. That will give the sonicwall all your up addresses and you can do whatever you want with them.

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