Using UFW, if I create a rule, will it apply to both IPv4 and IPv6? [closed]

Will UFW create the appropriate rules in both iptables and ip6tables?

1 Answer

It depends whether the rule you create is generic, such as

ufw allow 22/tcp

or is specific to one address family, such as

sudo ufw allow from 192.168.1.0/24 to any port 22 proto tcp

Ex.:

$ sudo ufw allow from 192.168.1.0/24 to any port 22 proto tcp
Rule added
$ sudo ufw status numbered
Status: active To Action From -- ------ ----
[ 1] 22/tcp ALLOW IN 192.168.1.0/24 

but

$ sudo ufw allow 22/tcp
Rule added
Rule added (v6)
$ sudo ufw status numbered
Status: active To Action From -- ------ ----
[ 1] 22/tcp ALLOW IN Anywhere
[ 2] 22/tcp (v6) ALLOW IN Anywhere (v6)