Initial Configuration

Allow ipv6 
 edit 
 vim /etc/default/ufw
 
 and add: 
 IPV6=yes
 
 Deny incoming default 
 ufw default deny incoming
 
 allow outcoming 
 ufw default allow outgoing
 
 Allow SSH / HTTP / HTTPS: 
 ufw allow 22/tcp
ufw allow 80/tcp
ufw allow 443/tcp