Your commands show ufw is operating correctly, but you are using the
wrong commands to add a rule and to check it worked. What I think you
meant to do is:
$ sudo ufw reset
$ sudo ufw enable
$ sudo ufw allow OpenSSH
Rule added
Rule added (v6)
$ sudo ufw status
Status: active
To Action From
-- ------ ----
OpenSSH ALLOW Anywhere
OpenSSH (v6) ALLOW Anywhere (v6)
$ sudo ip6tables -L ufw6-user-input
Chain ufw6-user-input (1 references)
target prot opt source destination
ACCEPT tcp anywhere anywhere tcp dpt:ssh /*
'dapp_OpenSSH' */
You can see the full iptables output with:
$ sudo ufw show raw
or:
$ sudo ufw show user-rules
** Changed in: ufw (Ubuntu)
Status: New => Invalid
** Changed in: ufw
Status: New => Invalid
--
ufw breaks ipv6
https://bugs.launchpad.net/bugs/633044
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