Quote: Originally Posted by ulukai
Hello, any more ideas?
Try looking at the Port Forwarding utility in your Router -- this will often suggest ports to open - especially if you can control your router via a web (browser) interface rather than a command line. The utility might have a help function in it.
Generally if you need some sort of Http server then 80 and 8080 should be open, otherwise open ports for SSH, FTP, RDP if you use these functions (and if you have a mail server then SMTP port).
If you understand "Tunnelling" you can make your system more secure by choosing any port you like and "Tunnel" it to the "Real port" you need
This method is often used for example if you want to log on to a Home computer and the work place blocks the outgoing RDP Port. You use a standard port which IS open (normally SSH or HTTP are open) and tunnel those to your network.
There's documentation here PuTTY Download Page
Here's how to bypass work Firewalls with Putty-- this is slightly old but the principle is the same. Using PuTTY (and SSH) to Bypass Firewalls