Step 5: Configure Wireless Security on an Integrated Service Router
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Introduction
This document describes how to configure wireless security on a Cisco
Integrated Services Router (ISR).
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Requirements
To perform the steps described in this document, you need to have these
items:
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Completed ISR Router Worksheet as instructed in the
Site
Survey
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An Wireless ISR that is powered on and connected to a PC with a
straight-through
Ethernet cable
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Cisco IOS® Software Release 12.2 installed on the
ISR
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Overview
Any wireless networking device within range of an AP can receive its
radio transmissions. Therefore, you need to configure security settings to
prevent unauthorized access to your network. This document explains how to
configure security settings to ensure that unauthorized users cannot connect to
your AP.
Cisco recommends LEAP for security, an implementation of the EAP/802.1x
protocol.
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Configure Security Settings
Follow these steps to configure security on the ISR:
Access the Router
Follow these steps to access the ISR:
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Open your browser and type
http://isr-ip-address
and press
Enter. For isr-ip-address, use the IP address in field W10 of
the ISR Router Worksheet.
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Enter the ISR username and password that you entered in fields B10
and B11 of the Integrated Services Router worksheet and press
Enter.
Note: If you cannot log into the router, see Troubleshoot the Procedure.
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Click Configure.
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In the Create Connection tab, select
Wireless and click Launch Wireless
Application.
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The wireless application launches in a separate
window.
Local RADIUS Server
Follow these steps to enable a local RADIUS server:
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Click Wireless Security > Local Radius
Server.
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Click the General Set-Up tab.
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Scroll to the User Groups area of the
Security: Local RADIUS Server screen.
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Enter these values under User Groups:
Field
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Value
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Group Name
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Default
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Session Timeout
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(Leave this field blank)
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Failed Authentication before Lockout
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3
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Lockout
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Interval, 600
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VLAN ID
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20
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SSID
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(Enter the Wireless Network Name from field W14 of the ISR
Router Worksheet)
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Click Add to add the SSID
number.
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Click Apply to save the
changes.
Express Security
Follow these steps to set up Express Security:
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Click Wireless Express Security >
Bridging.
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Enter these values in the Express Security
Bridging screen:
Field
|
Value
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SSID
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(Enter the Wireless Network Name from field W14 of the ISR
Router Worksheet)
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VLAN
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Enable VLAN ID, 20
Check Native VLAN
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Bridge
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1
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Security
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EAP Authentication
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RADIUS Server
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Enter the router IP address from field W10 of the ISR
Router Worksheet.
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RADIUS Server Secret
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Enter the RADIUS Password from field W15 of the ISR Router
Worksheet.
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Click Apply to save the changes. If a warning
message appears to indicate that you are about to update your settings, click
OK to continue.
Encryption Manager
Follow these steps to complete the Encryption Manager:
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Click Wireless Security > Encryption
Manager.
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In the Encryption Modes area, choose WEP
Encryption and Mandatory.
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Click Apply to save the changes. When a warning
message appears to indicate that you are about to update your settings, click
OK to continue.
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Next Step
You have completed basic configuration of the wireless module of your
router.
To add additional users to your wireless network, refer to
Add
or Remove a Wireless User.
If you want to configure an Internet connection, refer to the
appropriate document for your connection. If you are not sure what connection
type you have, refer to your Internet Worksheet.
Note: If your router is already connected to the Internet, refer to
Set Up
Internet Security on a Cisco Router.
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Troubleshoot the Procedure
This section provides information about common problems that you may
encounter. If this information does not solve your problem, contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
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Related Information