Cisco IOS Access Lists

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Juni 2001



Cisco routers are used widely both on the Internet and in corporate intranets. At the same time, the Cisco Internet Operating System (IOS) has grown to be very large and complex, and Cisco documentation fills several volumes.Cisco IOS Access Lists focuses on a critical aspect of the Cisco IOS--access lists. Access lists are central to the task of securing routers and networks, and administrators cannot implement access control policies or traffic routing policies without them. Access lists are used to specify both the targets of network policies and the policies themselves. They specify packet filtering for firewalls all over the Internet.Cisco IOS Access Lists covers three critical areas:* Intranets. The book serves as an introduction and a reference for network engineers implementing routing policies within intranet networking.* * Firewalls. The book is a supplement and companion reference to books such as Brent Chapman's Building Internet Firewalls. Packet filtering is an integral part of many firewall architectures, andCisco IOS Access Lists describes common packet filtering tasks and provides a "bag of tricks" for firewall implementers.* The Internet. This book is also a guide to the complicated world of route maps. Route maps are an arcane BGP construct necessary to make high level routing work on the Internet.Cisco IOS Access Lists differs from other Cisco router titles in that it focuses on practical instructions for setting router access policies. The details of interfaces and routing protocol settings are not discussed.


Preface 1. Network Policies and Cisco Access Lists Policy sets The policy toolkit 2. Access List Basics Standard access lists Extended access lists More on matching Building and maintaining access lists Named access lists 3. Implementing Security Policies Router resource control Packet filtering and firewalls Alternatives to access lists 4. Implementing Routing Policies Fundamentals of route filtering Implementing routing modularity Implementing route preferences Alternatives to access lists 5. Debugging Access Lists Router resource access control lists Packet-filtering access control lists Route-filtering access control lists 6. Route Maps Other access list types Generic route map format Interior routing protocols and policy routing BGP Debugging route maps and BGP 7. Case Studies A WAN case study A firewall case study An Internet routing case study A. Extended Access List Protocols and Qualifiers B. Binary and Mask Tables C. Common Application Ports Index


Jeff Sedayao is a network engineer with Intel Online Services, the web
and application hosting division of Intel Corporation. From 1987
through 1999, he architected and maintained Intel's Internet
connectivity, starting with a simple 2400-bps email link through CSNET
and ending up with multiple sites connecting to the Internet with
multiple ISPs at multi-megabit speeds. He has always been fascinated
with policy and policy implementation, ranging from using Cisco IOS
access lists for routing and firewall policies to sendmail
configurations and address space design. As part of Intel Online
Services, his main interests include network usage and performance
issues, DNS and email implementation, and addressing and routing
EAN: 9781565923850
ISBN: 1565923855
Untertitel: Sprache: Englisch.
Erscheinungsdatum: Juni 2001
Seitenanzahl: 272 Seiten
Format: kartoniert
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