We have a 10mbps connection coming into a client's site. A Sonicwall firewall sits on that connection and behind it a web server on the LAN. The client also happens to have a DSL connection into that building. So for redundancy purposes they asked if they could get that DSL connection to act as another gateway TO the web server sitting on that LAN. Would it be as simple as:
1. Setting up the second firewall with its WAN configured to a STATIC IP on the DSL.
2. Setting up the second firewall with its LAN side configured to an unused STATIC IP on the same LAN as the first firewall and web server.
3. Creating another A record in the domain's DNS zone record for the WWW traffic to reflect the DSL's static IP address?