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Red Hat RHCSA/RHCE 7 Cert Guide: Red Hat Enterprise Linux 7 (EX200 and EX300) by Sander van Vugt

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Chapter 22. Configuring a Firewall

The following topics are covered in this chapter:

Image Understanding Linux Firewalling

Image Working with firewalld

The following RHCSA exam objectives are covered in this chapter:

Image Configure firewall settings using firewall-config, firewall-cmd, or iptables

If a server is connected to the Internet, it needs to be protected against unauthorized access. SELinux is one part of this protection, and a firewall is the second part. ...

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