FTP problem

LP, imam gene6ftp server, do katerega pa ne morem dostopati preko neta, na routerju imam odprte porte in če izklopim firewall ne pomaga. Server pa deluje, ker se lahko lokalno povežem.

kaj je DMZ ne vem, in zna biti problem, ker uporabljam telekomov/siolov modem v router načinu in se mi to pojavilo šele sedaj, ko imam nov modem za optiko. Ni mi jasno, zakaj deluje povezava v načinu EPSV:
.....
> PASV
* Connect data stream passively
< 227 Entering Passive Mode (xxx,xxxx,x,195,156)
* Trying xxx.xxx.x.x... Timed out
* couldn't connect to host
* Connection #0 to host xx.xx.xx.x left intact

* Closing connection #0

.....

> EPSV
* Connect data stream passively
< 229 Entering Extended Passive Mode (|||50077|)
* Trying xx.xx.xx.x... connected
* Connecting to xx.xx.xx.x (xx.xx.xx.x) port 50077

> TYPE A
< 200 Type set to A.

> LIST
< 150 Data connection accepted from xx.xx.xxx.xxx:4284; transfer starting.
################################################## ###################### 100,0%< 226 Transfer ok.
################################################## ###################### 100,0%
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x
* Connection #0 to host xx.xx.xx.x left intact

> QUIT
< 221 Goodbye.
* Closing connection #0