• Chapter 1: Describing Network Requirements
• Chapter 2: Topologies for Teleworker Connectivity
• Chapter 3: Using Cable to Connect to a Central Site
• Chapter 4: Using DSL to Connect to a Central Site
• Chapter 5: Configuring DSL Access with PPPoE
• Chapter 6: Configuring DSL Access with PPPoA
• Chapter 7: DSL Connection Troubleshooting
• Chapter 8: The MPLS Conceptual Model
• Chapter 9: MPLS Architecture
• Chapter 10: Configuring Frame Mode MPLS
• Chapter 11: MPLS VPN Technologies
• Chapter 12: IPsec Overview
• Chapter 13: Site-to-Site VPN Operations
• Chapter 14: GRE Tunneling over IPsec
• Chapter 15: IPsec High Availability Options
• Chapter 16: Configuring Cisco Easy VPN
• Chapter 18: Cisco Device Hardening
• Chapter 19: Securing Administrative Access
• Chapter 20: Using AAA to Scale Access Control
• Chapter 21: Cisco IOS Threat Defense Features
• Chapter 22: Implementing Cisco IOS Firewalls
• Chapter 23: Implementing Cisco IDS and IPS

Chapter 1: Describing Network Requirements

Intelligent Information Network (IIN)

The IIN is a model designed to demonstrate how networks evolve to meet business needs.

The IIN is comprised of four road maps, each suiting a particular business type:

• Service-Oriented Network Architecture (SONA)
• Service Provider Architecture (IP Next Generation Networks, IP-NGN)
• Commercial Architecture
• Consumer Architecture

IIN has three phases:

• Integrated transport - The network serves as a common pathway for all communications traffic
• Integrated services - Services are moved from dedicated hardware to flexible virtualization
• Integrated applications - Application-Oriented Networking (AON); per-application network optimization

SONA

SONA has three layers:

1. Application Layer - Composed of applications for business and collaboration
2. Interactive Services Layer - Flexible virtualization of services
3. Networked Infrastructure Layer - Provides transport shared by all resources

Cisco Network Models

• Campus network
• Branch network
• Data center
• Enterprise edge
• WAN/MAN
• Teleworker