Sonicwall Routing

I have a scenario where I am currently using a WAN connection on my TZ210 to a network "above" mine that provides access to necessary servers as well as the Internet.  Currently, I have about 75 one-to-one NATs for various internal static IPs to external static IPs, which are necessary for the server communications.  I am getting my own Internet connection, however, and would like to route all 10.168.0.0/255.255.252.0 traffic through the primary WAN connection (the current one) and then route all other Internet-bound traffic through the secondary WAN connection (the new one).  What is the best way (most efficient) to do this?
TCS-techAsked:
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andrew1812Commented:
Source based routing would be an option where you can select packets originating from a specific source to use a specific interface to exit.
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TCS-techAuthor Commented:
Thanks for the comment, Andrew!

Would that require changes to Routing, NAT Policy, and Firewall?  That is what I had in mind, but I wasn't sure #1 if that was the most efficient way to handle it and #2 if it required changes to all 3 sections of the Sonicwall config or just the Routing.  It seems, though, that all 3 would be required.
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TCS-techAuthor Commented:
I just thought of this as well:  How would I route all other traffic through the new WAN connection?
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andrew1812Commented:
1. Setup an source routing for the required packets. This is a route entry which is performed , so routing table would change

2. To route all other packet through the WAN interface, setup a default route ( In Cisco it would be ip route 0.0.0.0 0.0.0.0 "gateway ip", where gateway ip would the WAN interface gateway IP address. This is a route entry , so routing table would change.

3. Can you ellaborate on how the networks are setup on TZ210, as in how many physical interfaces (ethernet) are used on it like , where does the  10.168.0.0/255.255.252.0 terminate, is the packets destined for the internet setup on other interfaces, where is WAN IP address configured etc.
This is to recommend a solution for NAT.
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TCS-techAuthor Commented:
Thanks for your advice, Andrew!  Sorry it took so long to respond.  I must have missed the email to inform me of your reply.  I am going to reconfigure the entire router sometime in July probably.  I plan to setup the new Internet connection on the primary WAN (X1) and setup the (X2) port as a trusted LAN.  Then, I will setup source routes to route all traffic destined for 10.168.0.0 through the X2 port like you suggested.
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