I've got a SonicWall Pro 2040 Enh. OS and here's what I'm trying to do -
I have a single Exchange 2007 server on the LAN. I want to connect a server to the DMZ port of my Sonicwall and mainly use it as an ISA reverse proxy for OWA access to the Exchange server. There are a few things I haven't dealt with before so I have some general questions -
1. Do I need two NICs in my server in the DMZ for ISA?
2. The server has to get a public IP right? If I have 8 public IPs with my ADSL connection at the moment can I divide this into two subnets and use one of these? Any way of avoiding this and just "allocating" one of the IPs from the WAN interface of the Sonicwall to save getting more IPs?
3. If I have this server with ISA on it doing reverse proxy for OWA to protect the Exchange server, does it make sense for the Sonicwall to forward incoming SMTP traffic to this ISA box and have it forward that onto the internal Exchange server?
That's it really. Besides knowing what a DMZ is and does I have no practical knowledge of it, and the same goes for ISA, so I'd appreciate reasonably detailed answers if possible.