Firewall management
Summary
You should have a host-based firewall running on every system on your network – no exceptions. A firewall, as stated previously, is not the perfect security tool, but it does help protect the system from attacks on other services that are not exposed. The same rules apply to network firewalls. This is why you must employ a multilayered approach to security and not rely on any one technology or solution. Firewalld is installed and enabled by default on all Red Hat-based systems, which should put system administrators at ease that their systems are protected as soon as they're placed online.
Infos
- firewalld: https://firewalld.org/
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