Securing Cisco Routers

• By Raman Sud and Ken Edelman
• Dec 12, 2003

Terms you'll need to understand:

• Types of threats

• Threat mitigation

• Console access

• VTY access

• Authentication methods

• Types of services

• Access control lists (ACLs)

• Threat mitigation using ACLs

Techniques you'll need to master:

• Securing console access

• Securing VTY access

• Securing passwords

• Securing Simple Network Management Protocol (SNMP)

• Disabling router services and interfaces

• Following rules for creating ACLs

• Configuring ACLs for threat mitigation

Introduction

In this chapter, you will learn about all the different ways you can secure a Cisco router from hackers and out-of-band threats. We discuss the different services you need to know when configuring a router.

We also delve into configuring access lists and the different access lists that are available to you as a network engineer that you can use to protect your network backbone.

Threat mitigation is an important aspect of network security, and as a security expert, it is your prime objective to ensure that you protect your network and mitigate threats that arise.