Hey I have a problem because i put my modem on DMZ mode which opens all ports, but it still says that port 3443 is closed, I don't know whats wrong and i really need to open port 3443 so that i can have a remote thing setup with my server. I even tried "telnet 3443" and it closes right away and the port doesn't open. I checked on www.canyouseeme.org and many other sites and the port is closed. I am wish Bell Sympatico in Canada (ISP ) Thanks.