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10-5
Cisco 10000 Series Router Service Selection Gateway Configuration Guide
OL-4387-02
Chapter 10 SSG TCP Redirect
The following sections describe these tasks in more detail:
• Configuration Considerations for SSG TCP Redirect, page 10-5
• Configuring Port-Based Redirection for Unauthenticated Users, page 10-5
• Limiting Redirection for Unauthenticated Users, page 10-5
• Configuring SSG TCP Redirect, page 10-6
Configuration Considerations for SSG TCP Redirect
When you configure SSG TCP Redirect, consider the following:
• Where to redirect—Determine the server group to which you want to redirect.
• When to redirect—Determine if you want to redirect for unauthenticated, unauthorized, or initial
packets.
• What to redirect—Determine if you want to redirect by networks or ports, and then decide the
networks to include in a network list and the ports to include in a port list.
Configuring Port-Based Redirection for Unauthenticated Users
To apply SSG TCP Redirect to unauthenticated users based on a TCP port, bind the unauthenticated user
redirect server group to a port using the redirect port command in SSG redirect configuration mode.
Example 10-1 binds the server group named userRedirect1 to port 80 for unauthenticated user
redirection.
Example 10-1 Binding a Server Group to a Port
Router(config)# ssg tcp-redirect
Router(config-ssg-redirect)# server-group userRedirect1
Router(config-ssg-redirect-group)# server 10.0.1.4 8090
Router(config-ssg-redirect)# redirect unauthenticated-user to userRedirect1
Router(config-ssg-redirect)# redirect port 80 to userRedirect1
Limiting Redirection for Unauthenticated Users
To limit the number of TCP sessions from an unauthenticated user that are redirected to a particular
server group, use the max-sessions command in the SSG redirect group configuration mode:
server-group
group-name
max-sessions
host number
Example 10-2 limits the number of TCP sessions from user4. In this example, SSG redirects a maximum
of 15 sessions from user4 to the server group named new-users1.
Example 10-2 Limiting Redirected TCP Sessions
Router(config)# ssg tcp-redirect
Router(config-ssg-redirect)# server-group new-users1
Router(config-ssg-redirect-group)# server 10.0.1.4 8090
Router(config-ssg-redirect-group)# max-sessions user4 15
- Text Part Number: OL-4387-02 1
- CONTENTS 3
- 6 Service Connection 6-1 4
- Contents 5
- 9 Interface Configuration 9-1 6
- 10 SSG TCP Redirect 10-1 6
- Document Conventions 10
- Related Documentation 11
- Obtaining Documentation 11
- Documentation Feedback 12
- TAC Case Priority Definitions 13
- Cisco TAC Website 13
- Opening a TAC Case 13
- About This Guide 14
- Service Selection Gateway 15
- Default Network 17
- Access Protocols 17
- Supported SSG Features 18
- SSG Restrictions 18
- SSG Prerequisites 20
- SSG Architecture Model 20
- Scalability and Performance 23
- Limitations and Restrictions 24
- SSG Logon and Logoff 25
- SSG Autologoff 26
- SSG Prepaid Idle Timeout 27
- Service Authorization 28
- Service Reauthorization 28
- Example 3-4 SSG TCP Redirect 29
- SSG Session and Idle Timeout 30
- Authentication and Accounting 31
- RADIUS Accounting Records 32
- Service Selection Methods 35
- Web Service Selection 36
- SESM and SSG Performance 37
- Service Connection 39
- SSG AutoDomain 40
- Example 6-1 SSG AutoDomain 41
- SSG Prepaid 42
- SSG Open Garden 43
- SSG Port-Bundle Host Key 44
- Exclude Networks 46
- Service Profiles 49
- Cached Service Profiles 52
- SSG Hierarchical Policing 55
- Interface Configuration 59
- Access Side Interfaces 60
- Network Side Interfaces 61
- SSG TCP Redirect 63
- Initial Captivation 65
- Configuring SSG TCP Redirect 68
- Miscellaneous SSG Features 71
- Packet Filtering 73
- SSG Unconfig 75
- Configuration of SSG Unconfig 76
- Service Translation 77
- Service Definitions 80
- Internal Network Sets 80
- Services-to-Sets Conversion 80
- Expansion of Service IDs 81
- Network Sets: 82
- Troubleshooting RADIUS 84
- Per-Service Statistics 84
- SSG Configuration Example 87
- SSG Implementation Notes 93
- GLOSSARY 97
- Glossary 100
- OL-4387-02 100
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