Pomoc oko FTP servera

Pozdrav ljudi! Imam sledeci problem. Zelim da dignem FTP server i uradio sam sledece:
- Otvorio dyndns nalog
- instalirao dyndns updater
- digao ftp server preko Serv-U
- podesio virtual server u ADSL routeru (Neobee/Dinamicka IP) na port 21 i na svoj komp u mrezi (192.168.1.2) i dyndns nalog



Ali kada pokusham da preko SmartFTP-a pristupim nalogu dobijam sledece:

[17:24:38] SmartFTP v2.5.1008.40
[17:24:38] Resolving host name "xxxxxxxxx.home.dyndns.org"
[17:24:38] Connecting to 81.18.51.60 Port: 21
[17:24:38] Connected to xxxxxxxxx.home.dyndns.org.
[17:24:39] An established connection was aborted by the software in your host machine.
[17:24:39] Cannot login waiting to retry (30s)...
[17:24:39] Server closed connection


Zastooooo???