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6.1 Firewalls
As you study this section, answer the following questions:
How is a packet-filtering firewall difierent from a circuit-level gateway? : Why is a packet-filtering firewall a stateless device?
What is the difierence between a proxy and a reverse proxy?
In this section, you will learn to:
Configure Windows Firewall Configure Linux iptables : Configure a host firewall
The key terms for this section include:
Term
Definition
A software- or hardware-based network security svstem that allows or denies network
Firewall
trafic according to a set of rules.
Access control list (ACL)
A list of filtering rules that firewalls use to identify allowed and blocked trafic.
This section helps you prepare for the following certification exam objectives:
Exam
Objective
4.1 Secure firewalls and security appliances
TestOut Network Pro
Configure a host firewall
2.1 Compare and contrast various devices, their features, and their appropriate placement on the network.
2.1.1 Networking devices : Firewall
CompTIA Network+ N10-008
4.3 Given a scenario, apply network hardening techniques.
: 4.3.1 Best practices : Firewall rules
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