ACL Configuration Quick Start | Cisco Systems OL-5650-02 guide

Chapter 1 Controlling CSS Access

Controlling CSS Network Traffic Through Access Control Lists

Enabling ACLs globally affects all traffic on all CSS circuits whether they have ACLs or not. When you enable ACLs, all traffic on a circuit that is not configured in an ACL permit clause is denied. If you do not apply an ACL on each circuit, the CSS denies traffic on that circuit.

When the CSS is using ACLs, its hardware implements a maximum of 10 ACLs with simple Layer 3 or Layer 4 clauses. The CSS software implements more complicated ACLs with Layer 5 clauses.

Note ACLs are not supported on the CSS Ethernet Management port.

ACLs do not block ARP packets.

You cannot use an ACL clause with a source group to perform source address translation of traffic destined to an SSL module. This clause will be accepted by the CSS but will be ignored for flows terminated at the SSL module. You can apply NAT to connections towards servers after SSL processing.

If you are load-balancing passive FTP servers and you want to use an ACL to apply a source group, you must configure services directly in the source group. For details on using source groups to support FTP sessions, refer to the Cisco Content Services Switch Content Load-Balancing Configuration Guide.

ACL Configuration Quick Start

Use the quick-start procedure in Table 1-1to configure an ACL. Each step includes the CLI command required to complete the task. For a complete description of each feature, see the sections following this procedure.

Note You must configure an ACL with at least one permit clause for each CSS circuit. Otherwise, the CSS denies all traffic on the circuit.

		Cisco Content Services Switch Security Configuration Guide
		Cisco Content Services Switch Security Configuration Guide
	OL-5650-02			1-15
	OL-5650-02			1-15

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Cisco Systems OL-5650-02 manual ACL Configuration Quick Start

Contents

Cisco Content Services Switch Security Configuration Guide Cisco Content Services Switch Security Configuration Guide Iii N T E N T S ACL Overview Configuring the CSS as a Client of a Radius Server Configuring Firewall Load Balancing Vii Example of Fwlb Viii B L E S OL-5650-02 Preface How to Use This Guide AudienceXii Xiii Related Documentation Xiv Rmon Document Title Description Xvi Symbols and Conventions Obtaining Documentation Cisco.comXvii Xviii Documentation FeedbackDocumentation DVD Ordering Documentation Reporting Security Problems in Cisco Products Cisco Product Security OverviewXix Cisco Technical Support Website Obtaining Technical Assistance Xxi Submitting a Service Request Xxii Definitions of Service Request Severity Xxiii Xxiv Controlling CSS Access Config# username-offdm bobo password secret Changing the Administrative Username and Password Config# username picard password captain superuser Creating Usernames and Passwords Controlling CSS Access Creating Usernames and Passwords Config# username picard password captain superuser Nwbnnnr Config# no username picardConfig# username picard password flute superuser Controlling Remote User Access to the CSS Configuring Virtual Authentication Configuring Console Authentication #config virtual authentication primary tacacs#config virtual authentication secondary local #config console authentication primary tacacs #config console authentication secondary local#config no console authentication Enabling Administrative Access to the CSS Controlling Administrative Access to the CSS Config# no restrict web-mgmt Disabling Administrative Access to the CSS Config# restrict telnet Controlling CSS Network Traffic Through Access Control Lists ACL Overview ACL ACL Configuration Quick Start Config-acl7#clause 10 deny any any destination range 20 Config-acl7#clause 15 permit any any destination anyConfig-acl7#apply circuit-VLAN1 Creating an ACL Config# acl disable Config-acl7#remove circuit-VLAN1Deleting an ACL Configuring Clauses Cisco Content Services Switch Security Configuration Guide Variables Options Parameters Destination content ownername/ rulename for an Variables OptionsParameters Show group ? Variables Options Parameters Prefer Adding a Clause When ACLs are Globally Enabled Config-acl7remove circuit-VLAN1 Config-acl7apply circuit-VLAN1Deleting a Clause Applying an ACL to a Circuit or DNS Queries Removing an ACL from Circuits or DNS Queries Enabling ACLs on the CSS Showing ACLs Disabling ACLs on the CSS Field Description Logging ACL Activity Setting the Show ACL Counters to Zero Config-acl7#clause 1 log disable Config-acl7#clause 1 log enable ACL Example Config# no logging subsystem acl Configuring Network Qualifier Lists for ACLs Creating an NQL Describing an NQLAdding Networks to an NQL Config-nqlbypassnql#no ip address 192.168.0.0/16 Config# logging subsystem nql level debug-7 Adding an NQL to an ACL Clause Showing NQL Configurations Configuring the Secure Shell Daemon Protocol # license Enabling SSH Config# no restrict ssh Configuring SSH AccessConfiguring Sshd in the CSS Configuring Sshd Keepalive Configuring Sshd Server-Keybits Configuring Sshd Port Config# sshd version Configuring Sshd VersionConfig# sshd server-keybits Config# no sshd server-keybits # show sshd config Configuring Telnet Access When Using SshdShowing Sshd Configurations Config# no restrict telnet # show sshd sessions # show sshd version Ptyfd Radius Server Configuring the CSS as a Client of a Radius Server Radius Configuration Quick Start Config# radius-server primary 172.27.56.76 secret HelloConfig# radius-server secondary 172.27.56.79 secret Hello #config virtual authentication primary radius Configuring a Radius Server for Use with the CSS Configuring Authorization Settings Configuring Authentication Settings Specifying a Primary Radius Server Config# no radius-server primary Config# no radius-server secondarySpecifying a Secondary Radius Server Config# no radius-server timeout Configuring the Radius Server TimeoutsConfiguring the Radius Server Retransmits Config# radius-server timeout Config# no radius-server dead-time Configuring the Radius Server Dead-TimeConfig# no radius-server retransmit Config# radius-server dead-time DOWN, Unknown Config# show radius statistics secondary 3describes the fields in the show radius statistics output OL-5650-02 TACACS+ Server TACACS+ Configuration Quick Start Config# show tacacs-server Configuring Authorization Settings Configuring Global TACACS+ Attributes Setting the Global CSS TACACS+ Timeout Period #config tacacs-server timeout#config no tacacs-server timeout #config no tacacs-server key Setting the Global TACACS+ Keepalive Frequency#config tacacs-server key market #config tacacs-server key acskefterefesdtx Defining a TACACS+ Server Config# no tacacs-server frequency OL-5650-02 #config no tacacs-server 192.168.11.1 Setting TACACS+ Authorization #config no tacacs-server authorize non-config #config tacacs-server authorize config#config tacacs-server authorize non-config #config no tacacs-server authorize config Setting TACACS+ Accounting Showing TACACS+ Server Configuration Information Field Description OL-5650-02 Configuring Firewall Load Balancing Overview of Fwlb Firewall Synchronization Configuring Fwlb Configuring a Keepalive Timeout for a Firewall Config# ip firewall 1 192.168.27.1 192.168.28.1Config# no ip firewall Configuring an IP Static Route for a Firewall Config# ip firewall timeoutConfig# no ip firewall timeout Config# ospf redistribute firewall metric 3 type1 Configuring Ospf to Advertise Firewall RoutesConfig# ip route 192.168.2.0/24 firewall 1 Config# no ip route 192.168.2.0/24 firewall Config# rip redistribute firewall Configuring RIP to Advertise Firewall RoutesExample of Fwlb Static Route Configuration Config# no ospf redistribute firewall Config# ip route 0.0.0.0/0 firewall Config# ip firewall 1 192.168.28.1 192.168.27.1Config# ip route 192.168.2.0/24 firewall Config# ip firewall 2 192.168.28.2 192.168.27.2 Example of Fwlb Configuring Fwlb with VIP and Virtual Interface Redundancy Fwlb with VIP/Interface Redundancy Configuration Cisco Content Services Switch Security Configuration Guide CSS-OUT-L Configuration Example of Firewall and Route Configurations CSS-IN-L Configuration Config# show flows 192.165.22.1 Config# show flowsDisplaying Firewall Flow Summaries Displaying Firewall IP Routes Config# show ip routes firewall Displaying Firewall IP Information Config# show ip firewall OL-5650-02 IN-1 D E IN-2 IN-3 FTP IN-4 Radius IN-5 XML IN-6