Network Attacks and Defenses

xxx  ◾  Introduction

filtering, stateless and stateful packet filtering, and active

and passive FTP (File Transfer Protocol) modes.

Chapter 8 introduces some of the common mechanisms

used for router security and device hardening. The router

represents a single point of entry for every network.

Consequently, securing the border router is an important

part of any network security solution. This chapter includes

hands-on labs to demonstrate the following router secu-

rity features: Authentication, Authorization, and Auditing

(AAA) Model, management access security, traffic filtering

using Access Control Lists (ACL), and stateful inspection.

We put into practice traffic filtering based on the Internet

Engineering Task Force (IETF) standard set by Requ ...