Hands-on Guide to the Red Hat Exams: RHSCA and RHCE Cert Guide and Lab Manual

Chapter 12. System Security

This chapter covers the following subjects:

• Security Through TCP Wrappers—This section covers security with the use of the TCP Wrappers utility.

• Firewall Rules Using iptables—This section looks at firewall rules.

• Working with NAT—This section covers more advanced uses of iptables to configure NAT.

• Pluggable Authentication Module (PAM)—This section looks at how security can be enforced with PAM, including password policies.

The following RHCSA exam objective is covered:

• Configure firewall settings using system-config-firewall or iptables

The following RHCE exam objective is covered:

• Use iptables to implement packet filtering and configure network address translation (NAT)

I’d like to start off this chapter ...