Yes, as the name suggests. It is a protection wall from attacks.
Follow the steps:
1) Connect to a Plesk server via SSH.
2) Run the command:
# plesk installer add --components psa-firewall
Follow the steps:
1) In the Security group, click Enable Firewall Rules Management under Tools & Settings > Firewall.
2) After enabling rules management, wait for the changes to take effect.
3) Then click Modify Plesk Firewall Rules, if you want to change a rule or policy.
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