Add a firewall to solid.community server
I think that there is no firewall installed. No rules in iptables
We can activate ufw (Uncomplicated Firewall) that is available by default.
I was thinking to allow port :
ufw status => inactive
ufw allow 'Nginx HTTP'
ufw allow nss
ufw allow 443
ufw show added => check rules before launching the firewall
Are there any other port that should be open. We must be sure not to be locked out.