Hardening Cisco Routers

By: Thomas Akin

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Paperback | 8 March 2002

At a Glance

Paperback
175 Pages

Dimensions(cm)
23.3 x 17.7 x 1.7

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Network administrators, auditors and architects know the importance of securing networks and finding security solutions that can be implemented quickly. This book focuses on ways to secure Cisco routers, it is a reference for protecting the protectors. Topics covered include: the importance of router security and where routers fit into an overall security plan; different router configurations for various versions of Cisco's IOS; standard ways to access a Cisco router and the security implications of each; password and privilege levels in Cisco routers; authentication, authorization and accounting (AAA) control; router warning banner use (as recommended by the FBI); unnecessary protocols and services commonly run on Cisco routers; SNMP security; anti-spoofing; protocol security for RIP, OSPF, EIGRP, NTP and BGP; logging violations; incident response; and physical security. There is a checklist at the end of each chapter that summarizes the hardening techniques discussed in the chapter. The checklists help double-check the configurations that have been instructed, and serve as quick references for future security procedures.

Industry Reviews

"This slim tome is a veritable gem of a book. It is written in a logical and clear style that permits reading from start to finish, but each specific section is complete in it's own right and as such it allows the reader to pick up the book and dip read satisfactorily. I learnt things from this book, and for me that is the best recommendation I can give." - Raza Rizvi, news@UK

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You Can Find This Book In

Non-Fiction Computing & I.T.Computer Networking & Communications Network Security Computer Hardware Network Hardware Computer Security Data Encryption Maintenance & Repairs Networking Standards & Protocols

Preface	p. ix
Router Security	p. 1
Router Security?	p. 1
Routers: The Foundation of the Internet	p. 2
What Can Go Wrong	p. 2
What Routers Are at Risk?	p. 4
Moving Forward	p. 5
IOS Version Security	p. 6
The Need for a Current IOS	p. 6
Determining the IOS Version	p. 6
IOS Versions and Vulnerabilities	p. 7
IOS Security Checklist	p. 10
Basic Access Control	p. 11
Authentication Versus Authorization	p. 11
Points of Access	p. 11
Basic Access Control	p. 13
Remote Administration	p. 19
Protection with IPSec	p. 28
Basic Access Control Security Checklist	p. 30
Passwords and Privilege Levels	p. 32
Password Encryption	p. 32
Clear-Text Passwords	p. 33
Service password-encryption	p. 33
Enable Security	p. 34
Strong Passwords	p. 35
Keeping Configuration Files Secure	p. 36
Privilege Levels	p. 38
Password Checklist	p. 41
AAA Access Control	p. 43
Enabling AAA	p. 43
Local Authentication	p. 44
TACACS+ Authentication	p. 44
RADIUS Authentication	p. 47
Kerberos Authentication	p. 50
Token-Based Access Control	p. 51
AAA Security Checklist	p. 51
Warning Banners	p. 52
Legal Issues	p. 52
Example Banner	p. 54
Adding Login Banners	p. 54
Warning Banner Checklist	p. 57
Unnecessary Protocols and Services	p. 58
ICMP	p. 58
Source Routing	p. 63
Small Services	p. 64
Finger	p. 64
HTTP	p. 65
CDP	p. 65
Proxy ARP	p. 65
Miscellaneous	p. 66
SNMP	p. 67
Unnecessary Protocols and Services Checklist	p. 67
SNMP Security	p. 68
SNMP Versions	p. 69
Securing SNMP v1 and v2c	p. 70
Securing SNMP v3	p. 76
SNMP Management Servers	p. 81
SNMP Security Checklist	p. 81
Secure Routing and Antispoofing	p. 83
Antispoofing	p. 83
Routing Protocol Security	p. 88
Routing Protocol and Antispoofing Checklist	p. 94
NTP	p. 96
NTP Overview	p. 96
Configuring NTP	p. 97
NTP Checklist	p. 106
Logging	p. 108
Logging in General	p. 108
Router Logging	p. 109
ACL Violation Logging	p. 116
AAA Accounting	p. 118
Logging Checklist	p. 121
Checklist Quick Reference	p. 123
Physical Security	p. 133
Incident Response	p. 143
Configuration Examples	p. 149
Resources	p. 161
Index	p. 165
Table of Contents provided by Syndetics. All Rights Reserved.

Hardening Cisco Routers

At a Glance

Paperback

Industry Reviews

Shipping

How to return your order

Defective items

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