Specifications
Table Of Contents
- Contents
- Preface
- Getting Started
- Basic Router Configuration
- Interface Port Labels
- Viewing the Default Configuration
- Information Needed for Configuration
- Configuring Basic Parameters
- Configuring Static Routes
- Configuring Dynamic Routes
- Configuring Enhanced IGRP
- Basic Router Configuration
- Configuring Your Router for Ethernet and DSL Access
- Sample Network Deployments
- Configuring PPP over Ethernet with NAT
- Configuring PPP over ATM with NAT
- Configuring a LAN with DHCP and VLANs
- Configuring a VPN Using Easy VPN and an IPSec Tunnel
- Configure the IKE Policy
- Configure Group Policy Information
- Apply Mode Configuration to the Crypto Map
- Enable Policy Lookup
- Configure IPSec Transforms and Protocols
- Configure the IPSec Crypto Method and Parameters
- Apply the Crypto Map to the Physical Interface
- Create an Easy VPN Remote Configuration
- Verifying Your Easy VPN Configuration
- Configuration Example
- Configuring VPNs Using an IPSec Tunnel and Generic Routing Encapsulation
- Configuring a Simple Firewall
- Configuring a Wireless LAN Connection
- Sample Configuration
- Configuring Additional Features and Troubleshooting
- Additional Configuration Options
- Configuring Security Features
- Configuring Dial Backup and Remote Management
- Troubleshooting
- Reference Information
- Cisco IOS Software Basic Skills
- Concepts
- ROM Monitor
- Common Port Assignments

13
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Preface
Conventions
Conventions
This guide uses the conventions described in the following sections for instructions and information.
Notes, Cautions, and Timesavers
Notes, cautions and time-saving tips use the following conventions and symbols:
Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in
this guide.
Caution This caution symbol means reader be careful. In this situation, you might do something that could result
in equipment damage or loss of data.
Timesaver This symbol means the described action saves time.
Command Conventions
Table 2 describes the command syntax used in this guide.
Appendix C ROM Monitor Describes the use of the ROM Monitor (ROMMON) utility.
Appendix D Common Port Assignments Describes the currently assigned Transmission Control
Protocol (TCP) and User Datagram Protocol (UDP) port
numbers.
Index
Table 1 Document Organization (continued)
Chapter Title Description
Ta b l e 2 Command Syntax Conventions
Convention Description
boldface Commands and keywords.
italic Command input that is supplied by you.
[ ] Optional keywords and default responses to system
prompts appear within square brackets.
{x | x | x} A choice of keywords (represented by x) appears in
braces separated by vertical bars. You must select
one.