Okay. Thanks anyway :(

jimasek wrote FTP enable - should automatically redirect traffic on 21 port to your router. Sorry I can't check your FTP server access without your IP address :( Port 21 is redirects from inside....

jimasek wrote You can try ftp access by address ftp://xx.xxx.xxx.xx/volume1 That doesn't work. On my laptop the ftp server is given by its dynDNS adress, and the remote folder, and does not...

It looks like this:

jimasek wrote Do you have web access to router from outside network? We have in Poland 3G or 4G operators who's restricted public IP addresses on firewall. And users can't access from internet. We...

jimasek wrote This WAN IP address is public? Without any restriction? How do you mean "Without any restriction?" I can ping it from outer network, if that's what you mean. But it's not in the "Public...