Originally Posted by
blueivy
Which site is it you are trying to access the chat through?
ActiveX controls can pretty much do anything when installed on your PC, however they would generally communicate through port 80 which is used by the browser anyway.
Why do you think / what makes you think you need to open a port on your firewall for the chat? If you're not sure what you're doing then I wouldn't start opening ports in the firewall. The more ports you open, the weaker the firewall and your security is.