I'm not sure if the above is Ok.
paul@Joy4:~$ sudo iptables -L
[sudo] password for paul:
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Installing openssh-server didn't help at least with the Bitvise from a Windows machine on the same LAN.