I'm a little confused (as usual). Not that I want to challenge your assertion, Dave, but my experience is that port 80 is often the *only* port open, since pretty much all HTTP browsing goes through it. Then 443 (HTTPS), then the email ones, then FTP and so on. But if I had to design something with a fixed port, it would be 80 because it's basically universally open. Just curious - what classification of customers block port 80? (schools, government, slave labor camps?)