User Guide

Introduction
In this chapter
17 Network Security - Firewalling
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3EC 36231 ABAA TCZZA Ed. 01
17 Network Security - Firewalling
A Firewall is a security gateway that controls access between a
private LAN domain, often referred to as Intranet, and the public
Internet.
It secures the entry points to the network, in such a way that access
is only allowed to authorized traffic. Therefore, to effectively
control the flow of data, firewall protection should be placed at
each point where the network connects to the WAN, or the
Internet.
This chapter aims to familiarize you with the operation of the
STPro's programmable Firewall.
Topic See
Operation of the Firewall 17.1
Firewall Model 17.2
Firewall Actions 17.3
Firewall Criteria 17.4
Firewall and NAPT 17.5
Firewall Configuration 17.6
Firewall Configuration Examples 17.7