[Rock Anthony]

Well, thank you for hearing me! I'm extremely gratefull that you've considered my feedback enough to implement changes in the next release. Thanks!

Originally Posted by KeyCAPTCHA

Firewall can block any service or website, it is its purpose.
If someone uses a firewall, (s)he should configure what (s)he wants from it
(to block or not)


Thanks again for your time and valuable feedback!

What port should I tell my users to open so that KeyCAPTCHA will function?

There are cases where a person is behind someone else's firewall, and has no authority to configure that firewall (computer lab on a university campus, for example). For situations like that, it would be nice for service providers, such as KeyCAPTCHA, to use well-known ports that are not commonly blocked by firewalls. (Perhaps KeyCAPTCHA is using a well-known port, and the firewall I'm behind is blocking anyway.)

vBulletin is obviously served through well-known ports. I have no problems accessing any part of my vBulletin message board behind the various firewalls I'm protected by. I want the same for my users - including those firewalled users that would like to register, but are precluded from doing so because KeyCAPTCHA is blocked via firewall.

Consider that the default vBulletin registration page renders on the screen, with a message to assemble the KeyCAPTCHA puzzle - but there is no puzzle image displayed on the screen because it's been firewalled. There's not even a image placeholder to give hint to the user that an image should be visible, but isn't. The user took the time to complete the registration page, but is stuck and clueless because (s)he is instructed to complete a puzzle that is not there.

Despite what's stated above, so far I'm impressed enough with KeyCAPTCHA that I'm trying to talk myself into overlooking this firewall issue. Perhaps I can just put a notice on the registration form that firewalled users may or may not be able to register.