I had this configuration:
2x win2k 1x linux slackware --> router --> modem --> internet
I didn't work to configure the nat but i could connect to my ftp on my linux internaly.
Now i changed it to:
2x win2k --> router --> linux slackware --> modem --> internet
Now the thing is that my webserver is working (people can enter my webpages throught my internet ip) i opened port 80 in the nat config of my modem and when ik type 192.168.2.104 (ip of the linux machine) i can browse throught my webpages internaly.
But when i wanted to open port 20/21 for ftp it didn't work. The biggest problem of all is that i can't even connect to my linux internaly. It did work with the first set-up.
Every time i try to connect i get connection time-out