I am trying to SFTP with Filezilla but it is not able to connect to the server and I think this is due to my firewall rules?

I can SSH absolutely fine. The port for SSH is 6128. Can anyone tell me what changes I would have to make to allow an FTP connection over SSH given that SSH is already working?

(Here are my IPtables rules)

```
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
fail2ban-ssh  tcp  --  anywhere             anywhere             multiport dports ssh
ACCEPT     all  --  anywhere             anywhere
REJECT     all  --  anywhere             loopback/8           reject-with icmp-port-unreachable
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     udp  --  anywhere             anywhere             udp dpt:9987
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:10011
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:30033
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:6128
ACCEPT     icmp --  anywhere             anywhere             icmp echo-request
LOG        all  --  anywhere             anywhere             limit: avg 5/min burst 5 LOG level debug prefix "iptables denied: "
DROP       all  --  anywhere             anywhere

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
DROP       all  --  anywhere             anywhere

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere

Chain fail2ban-ssh (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere

```