I've been trying to test a new site design which requires me to view the page on my external server. Internet Explorer works, as it always has, but I recently downloaded Opera and Netscape and neither can access a page.

They both say "Connection refused by (URL Here)"

I have a Sonicwall Tele3 firewall. I figured it might be blocking them but I'm not sure why....

It doesn't make any sense to me why IE would work and the firewall wouldn't let these through.