SIMULATION -
The firewall must be open.
SIMULATION -
The firewall must be open.
To ensure that the firewall is open and properly configured, start the iptables service, then flush and delete any current rules, and finally save the configuration and enable iptables to start at boot. Here are the steps: 1) Start the iptables service using `/etc/init.d/iptables start`. 2) Flush all current rules with `iptables -F`. 3) Delete any user-defined chains with `iptables -X`. 4) Zero all packet and byte counters in all chains with `iptables -Z`. 5) Save the new configuration using `/etc/init.d/iptables save`. 6) Enable iptables to start at boot with `chkconfig iptables on`.
if not installed: yum install -y firewalld else: systemctl enable --now firewalld.service firewall-cmd --state
systemctl disable --now firewalld.service firewall-cmd --state
Firewall must be open... Disable o enable?
in my ignorance "must be open" -> "must be installed but not block anything" sudo firewall-cmd --set-default-zone=trusted sudo firewall-cmd --reload sudo firewall-cmd --list-all