Running a Web Server behind a SOHO Firewall

Hello guys/gals!

I have an issue that I have to resolve fairly quickly and I need your help.

I have a Windows 2003 Server box behind a Watchguard Firebox SOHO 6. It does not have NATs. I am hosting websites with IIS 6 and am under the impression that using host headers is the only way I can use the existing firewall because it is capable of only having one external (public) ip. I know I can cut the firewall out of the picture and enter my alotted public IPs on the servers NIC and assign each website a unique IP, but I want to use the firewall for obvious reasons and can't upgrade right now.

I have one IP assigned to the network card (192.168.111.7) and under IIS 6, I have two websites that are both set to "All Unassigned." In both websites I have host headers set up like this: "domain.com" and "www.domain.com" both on port 80. I have both set up with index.html as the document to load when a request comes through. Both websites point to different directories.

I have the firewall accepting incoming http requests and sending them to 192.168.111.7 (the server). In addition, I have an ftp server set up using IIS 6 as well with a static IP of 192.168.111.7. The firewall is accepting incoming ftp requests and sending them to 192.168.111.7.

I have the 2 domains registered with Network Solutions and my ISP provider has created records for the 2 domains leading to the firewalls public IP.

Am I doing someting wrong? If I'm missing something that I need I would really really appreciate it if anybody had any clues!

Thanks in advance!
Bobby

This is just a guess but rename the first Name ie..
domain.com to something else like www.domain2.com as I believe your browser is prepending the www.
Also you didnt mention but SSL is not supported so if your site is using SSL it will not work as the header is encrypted and cant read the URL