Network is down when iptables restart

Hestia: 1.3.4
System: Ubuntu 20.04
When I restart iptables service, system network is going down.
Only rescue is machine restart.

did you change your ssh port? if so, you obviously need to adjust that in your firewall setting. what else did you change to iptables that requires a restart of that service?

Yes I changed ssh port and modify port in chains.conf
I have several ports which i need to restrict by iptables.

After iptables restart hestia also unrechable. I do not change hestia port :frowning:

Hestia has a firewall section, where you should add/change the ports then. because the default policy is DROP and only specific ports allowed of course you will lose connection if your changed ssh-port is not opened up there :wink: