I've opened 21st port, but still can't connect to any ftp server using ftp command.
limmy@Limmy-U:~$ ftp ftp.gnu.org
ftp: connect to address 208.118.235.20: Connection timed out
Trying 2001:4830:134:3::b...
ftp: connect: Network is unreachable
What the reason of it? Thanks
limmy@Limmy-U:~$ sudo iptables -L
[sudo] пароль для limmy:
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
limmy@Limmy-U:~$ ftp ftp.gnu.org
ftp: connect to address 208.118.235.20: Connection timed out
Trying 2001:4830:134:3::b...
ftp: connect: Network is unreachable
ftp> exit