Downstream Access Control List-outacl | Cisco Systems OL-4387-02

Chapter 11 Miscellaneous SSG Features

Packet Filtering

Downstream Access Control List—outacl

Specifies either a Cisco IOS standard ACL or an extended ACL to be applied to downstream traffic going to the user.

Cisco-AVpair = "ip:outacl[#number]={standard-access-control-list extended-access-control-list}"

Upstream Access Control List—inacl

Specifies either a Cisco IOS standard ACL or an extended ACL to be applied to upstream traffic coming from the user.

Cisco-AVpair = "ip:inacl[#number]={standard-access-control-list extended-access-control-list}"

Restrictions for Packet Filtering

Packet filtering for SSG has the following restrictions:

•SSG accepts only the permit and deny actions for a per-user ACL. You can place ACLs on user traffic for both the input and output directions that are similar to existing Cisco IOS ACLs; however, the log option is not accepted.

•SSG supports mini-ACLs with eight or less access control entries (ACEs). The ACEs can be extended ACEs.

•SSG does not support turbo ACLs applied to SSG users. Turbo ACLs have more than eight ACEs defined.

•To support some SSG features, SSG prepends ACEs on user ACLs. Because the number of ACEs is restricted to a maximum of eight, the number of ACEs that you can define is therefore reduced in some cases. For example, for the Port-Bundle Host Key feature, an ACE is required on both the host input and output ACL. This allows seven ACEs that you can define.

•SSG does not support the ability to apply per-service (connection level) ACLs. ACLs for QoS classification are not applicable to SSG host interfaces.

•SSG ACLs take precedence over Cisco IOS ACLs. If you configure a Cisco IOS ACL on an SSG interface by using the ip access-groupcommand, the router applies the ACL as long as an SSG ACL is not applied to the interface in the same direction. If an SSG ACL is applied to the interface in the same direction, the router applies the SSG ACL.

Cisco 10000 Series Router Service Selection Gateway Configuration Guide

11-4	OL-4387-02

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Cisco Systems OL-4387-02 manual Downstream Access Control List-outacl, Upstream Access Control List-inacl, 11-4

Contents

Corporate Headquarters Copyright 2004, Cisco Systems, Inc All rights reserved N T E N T S Iii Configuration Example for SSG AutoDomain Configuration Example for SSG Open Garden Configuration of VPI/VCI Static Binding to a Service Profile SSG Unconfig Vii Viii Document Organization About This GuideAudience Document Conventions Cisco.com Related DocumentationObtaining Documentation Documentation CD-ROM Documentation FeedbackObtaining Technical Assistance Ordering Documentation TAC Case Priority Definitions Cisco TAC WebsiteOpening a TAC Case Xiii Obtaining Additional Publications and Information Xiv Service Selection Gateway Overview Service Selection Gateway SSG Topology Example Default Network Access Protocols Supported SSG Features SSG Restrictions Service Selection Gateway Overview SSG Restrictions SSG Prerequisites SSG Architecture Model Service Selection Gateway Overview SSG Architecture Model OL-4387-02 Scalability and Performance Limitations and Restrictions Scalability and Performance Limitations and Restrictions Prerequisites for Single Host Logon SSG Logon and LogoffSingle Host Logon Restrictions for SSG Autologoff Configuration of SSG AutologoffSSG Autologoff Example 3-1 SSG Autologoff Using ARP Ping SSG Prepaid Idle TimeoutConfiguration Example for SSG Autologoff Example 3-2 SSG Autologoff Using Icmp Ping Service Authorization Service Reauthorization Configuration of SSG Prepaid Idle Timeout Restrictions for SSG Prepaid Idle TimeoutPrerequisites for SSG Prepaid Idle Timeout Configuration Example for SSG Prepaid Idle Timeout Example 3-7 SSG Threshold Volume SSG Session and Idle TimeoutExample 3-5 SSG Service-Specific TCP Redirect Example 3-6 SSG Threshold Time Restrictions for SSG Full Username Radius Attribute Authentication and AccountingSSG Full Username Radius Attribute Example 4-1 Radius Freeware Format Example Example 4-3 Radius Accounting-Start Record Account Login and LogoutRadius Accounting Records Example 4-4 Radius Accounting-Stop Record Service Connection and Termination Authentication and Accounting Radius Accounting Records PTA-Multidomain Service Selection MethodsPPP Terminated Aggregation Web Service Selection Restrictions for PTA-MD Sesm and SSG Performance OL-4387-02 Service Connection SSG AutoDomain Restrictions for SSG AutoDomain Configuration of SSG AutoDomainConfiguration Example for SSG AutoDomain Example 6-3 AutoDomain Exclude File Format Example 6-1 SSG AutoDomainExample 6-2 AutoDomain Exclude Profile SSG VSA Format Restrictions for SSG Prepaid Configuration of SSG PrepaidSSG Prepaid Configuration Example for SSG Prepaid SSG Open Garden SSG Port-Bundle Host Key Configuration of SSG Open GardenConfiguration Example for SSG Open Garden Restrictions for SSG Open Garden Restrictions for SSG Port-Bundle Host Key Exclude Networks Mutually Exclusive Service SelectionConfiguration of SSG Port-Bundle Host Key Prerequisites for SSG Port-Bundle Host Key Configuration of Mutually Exclusive Service Selection OL-4387-02 Service Profiles Downstream Access Control List Domain Name Upstream Access Control ListService Authentication Type Full Username Service Mode Service-Defined CookieService Description Service Next-Hop Gateway Service Profile Example Cached Service ProfilesType of Service Example 7-1 Service Profile Configuration of Cached Service Profiles OL-4387-02 SSG Hierarchical Policing Token Bucket Scheme SSG Hierarchical PolicingSSG Hierarchical Policing Overview SSG Hierarchical Policing Configuration Restrictions for SSG Hierarchical Policing Configuration Examples for SSG Hierarchical Policing Example 8-2 Enabling Per-Session Policing on a Router OL-4387-02 Interface Configuration Transparent Passthrough Access Side Interfaces For example Network Side Interfaces Configuration of Transparent PassthroughMulticast Protocols on SSG Interfaces Restrictions of Transparent Passthrough Configuration of Multicast Protocols on SSG Interfaces 10-1 Redirection for Unauthenticated UsersSSG TCP Redirect Redirection for Unauthorized Services 10-2 Initial Captivation 10-3 Prerequisites for SSG TCP Redirect Configuration of SSG TCP RedirectRestrictions for SSG TCP Redirect 10-4 Example 10-2 Limiting Redirected TCP Sessions 10-5Example 10-1 Binding a Server Group to a Port Configuring SSG TCP Redirect 10-6 Example 10-3 Defining a Captive Portal Server Group Configuration Examples for SSG TCP Redirect10-7 Example 10-4 Defining Network Lists 10-8 Example 10-5 Defining Port Lists 11-1 Miscellaneous SSG FeaturesVPI/VCI Static Binding to a Service Profile Radius Virtual Circuit Logging AAA Server Group Support for Proxy ServicesConfiguration of Radius Virtual Circuit Logging 11-2 Packet Filtering 11-3 Restrictions for Packet Filtering Downstream Access Control List-outaclUpstream Access Control List-inacl 11-4 Configuration Example for Packet Filtering SSG UnconfigConfiguration of Packet Filtering Restrictions for SSG Unconfig Configuration Examples for SSG Unconfig Prerequisites for SSG UnconfigConfiguration of SSG Unconfig 11-6 11-7 SSG Enhancements for Overlapping ServicesService Translation 11-8 Restrictions for Service Translation 11-9 Configuration of Service Translation 11-10 Expansion of Service IDs 11-11 Network Sets 11-12 Monitoring and Maintaining SSG 12-1 Restrictions for Per-Service Statistics Troubleshooting RadiusPer-Service Statistics 12-2 Monitoring the Parallel Express Forwarding Engine 12-3 12-4 SSG Configuration Example Figure A-1 SSG Example Topology Example A-1 Cisco 10000 Router SSG Configuration Username cisco password 0 cisco clock timezone PST Ssg accounting interval 300 ssg profile-cache Full-duplex Peer default ip address pool SSG-POOL Exec-timeout 0 0 password lab SSG Feature Implementation Notes SSG Implementation Notes Mpls Also see the Restrictions for SSG TCP Redirect section on OL-4387-02 O S S a R Y GL-1 GL-2 GL-3 GL-4 GL-5 GL-6 D E IN-1 DSL G-1 IN-2 ISP G-2 L2TP IN-3 Radius IN-4 Reauthorizing prepaid IN-5 TCP IN-6 VRF G-5 VSA IN-7 IN-8