1) the ISP might be blocking everything except the common ports like 80, 20/21, 25, 443,...
2) Once again, people, disabling the firewall won't help unless it blocks outgoing connections, which is quite rare (of course it's possible, but in that case the user should be aware of that - usually either privacy concerns or preventing home-calling of pirated software)
2) Once again, people, disabling the firewall won't help unless it blocks outgoing connections, which is quite rare (of course it's possible, but in that case the user should be aware of that - usually either privacy concerns or preventing home-calling of pirated software)