Quote:
   | Running GTK-Gnutella 0.95 | 
 
  Try to keep gtk-gnutella more up to date. The older the version, the worse the results will be. As the current version is allready 0.95.4   
 Quote:
   | I've tried reaching the port from the net. | 
 
  And what happened? Could you reach it. What port did you open?  
GTK-Gnutella does not use the portmapper. So you can ignore that one. That leaves your firewall (could be ipchains, can also be iptables)   
http://gtk-gnutella.sourceforge.net/nl/?page=faq#gnet1