Have you ever used EZ-security?
Do you know why it blocks messenger incoming messages and some sites?!
Many security suites block ports by default. You typically need to "allow" traffic for various applications and/or ports. Even Microsoft took this route with the firewall included with Windows XP.
Anything with a name like that sounds dubious to me. Security is NOT easy and any attempt to make it so will almost certainly overlook important things.
If you want security, you're better to use an operating system that is designed to give you security (such as Linux) rather than one which isn't and trying to bolt it on top. (I'm not saying there is something mystical about a properly-configured Linux box that makes it inherently more secure than a properly-configured Windows box; just that Linux has a better security model which makes securing it properly a lot simpler.)