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Cisco Systems OL-5650-02 manual Controlling CSS Network Traffic Through Access Control Lists

Models: OL-5650-02

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Chapter 1 Controlling CSS Access

Controlling CSS Network Traffic Through Access Control Lists

•restrict secure-xml- Disables the transfer of XML configuration files to the CSS through secure HTTPS SSL connections (disabled by default).

•restrict xml - Disables the transfer of XML configuration files to the CSS through unsecure HTTP connections (disabled by default).

•restrict web-mgmt- Disables web management access to the CSS (disabled by default).

For example, to disable Telnet access, enter:

(config)# restrict telnet

Controlling CSS Network Traffic Through Access Control Lists

The CSS provides traffic filtering capabilities with access control lists (ACLs). ACLs filter inbound network traffic by controlling whether packets are forwarded or blocked at the CSS interfaces. You can configure ACLs for routed network protocols, filtering the protocol packets as the packets pass through the CSS.

The following sections describe how to configure an ACL:

•ACL Overview

•ACL Configuration Quick Start

•Creating an ACL

•Deleting an ACL

•Configuring Clauses

•Adding a Clause When ACLs are Globally Enabled

•Deleting a Clause

•Applying an ACL to a Circuit or DNS Queries

•Removing an ACL from Circuits or DNS Queries

•Enabling ACLs on the CSS

•Disabling ACLs on the CSS

•Showing ACLs

•Setting the Show ACL Counters to Zero

	Cisco Content Services Switch Security Configuration Guide
1-12	OL-5650-02

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Cisco Systems OL-5650-02 manual Controlling CSS Network Traffic Through Access Control Lists, Config# restrict telnet

Contents

Cisco Content Services Switch Security Configuration Guide Cisco Content Services Switch Security Configuration Guide N T E N T S IiiACL Overview Configuring the CSS as a Client of a Radius Server Configuring Firewall Load Balancing Example of Fwlb ViiViii B L E S OL-5650-02 Preface How to Use This Guide AudienceXii Related Documentation XiiiRmon XivDocument Title Description Symbols and Conventions XviObtaining Documentation Cisco.comXvii Documentation Feedback Documentation DVDOrdering Documentation XviiiReporting Security Problems in Cisco Products Cisco Product Security OverviewXix Obtaining Technical Assistance Cisco Technical Support WebsiteSubmitting a Service Request XxiDefinitions of Service Request Severity XxiiXxiii Xxiv Controlling CSS Access Changing the Administrative Username and Password Config# username-offdm bobo password secretCreating Usernames and Passwords Config# username picard password captain superuserControlling 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 Controlling Administrative Access to the CSS Enabling Administrative Access to the CSSDisabling Administrative Access to the CSS Config# no restrict web-mgmtControlling CSS Network Traffic Through Access Control Lists Config# restrict telnetACL 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 Variables Options Parameters Show group ?Adding a Clause When ACLs are Globally Enabled PreferConfig-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 Disabling ACLs on the CSS Showing ACLsField Description Setting the Show ACL Counters to Zero Logging ACL ActivityConfig-acl7#clause 1 log enable Config-acl7#clause 1 log disableConfig# no logging subsystem acl ACL ExampleConfiguring Network Qualifier Lists for ACLs Creating an NQL Describing an NQLAdding Networks to an NQL Config# logging subsystem nql level debug-7 Config-nqlbypassnql#no ip address 192.168.0.0/16Showing NQL Configurations Adding an NQL to an ACL ClauseConfiguring the Secure Shell Daemon Protocol Enabling SSH # licenseConfiguring SSH Access Configuring Sshd in the CSSConfiguring Sshd Keepalive Config# no restrict sshConfiguring Sshd Port Configuring Sshd Server-KeybitsConfiguring Sshd Version Config# sshd server-keybitsConfig# no sshd server-keybits Config# sshd versionConfiguring Telnet Access When Using Sshd Showing Sshd ConfigurationsConfig# no restrict telnet # show sshd config# show sshd sessions Ptyfd # show sshd versionRadius 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 Configuring a Radius Server for Use with the CSS #config virtual authentication primary radiusConfiguring Authentication Settings Configuring Authorization SettingsSpecifying a Primary Radius Server Config# no radius-server primary Config# no radius-server secondarySpecifying a Secondary Radius Server Configuring the Radius Server Timeouts Configuring the Radius Server RetransmitsConfig# radius-server timeout Config# no radius-server timeoutConfiguring the Radius Server Dead-Time Config# no radius-server retransmitConfig# radius-server dead-time Config# no radius-server dead-timeConfig# show radius statistics secondary DOWN, Unknown3describes 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 Setting the Global TACACS+ Keepalive Frequency #config tacacs-server key market#config tacacs-server key acskefterefesdtx #config no tacacs-server keyConfig# no tacacs-server frequency Defining a TACACS+ ServerOL-5650-02 #config no tacacs-server 192.168.11.1 Setting TACACS+ Authorization #config tacacs-server authorize config #config tacacs-server authorize non-config#config no tacacs-server authorize config #config no tacacs-server authorize non-configSetting TACACS+ Accounting Showing TACACS+ Server Configuration Information Field Description OL-5650-02 Configuring Firewall Load Balancing Overview of Fwlb Configuring Fwlb Firewall SynchronizationConfiguring 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 Configuring Ospf to Advertise Firewall Routes Config# ip route 192.168.2.0/24 firewall 1Config# no ip route 192.168.2.0/24 firewall Config# ospf redistribute firewall metric 3 type1Configuring RIP to Advertise Firewall Routes Example of Fwlb Static Route ConfigurationConfig# no ospf redistribute firewall Config# rip redistribute firewallConfig# ip firewall 1 192.168.28.1 192.168.27.1 Config# ip route 192.168.2.0/24 firewallConfig# ip firewall 2 192.168.28.2 192.168.27.2 Config# ip route 0.0.0.0/0 firewallExample of Fwlb Configuring Fwlb with VIP and Virtual Interface Redundancy Fwlb with VIP/Interface Redundancy Configuration Cisco Content Services Switch Security Configuration Guide Example of Firewall and Route Configurations CSS-OUT-L ConfigurationCSS-IN-L Configuration Config# show flows 192.165.22.1 Config# show flowsDisplaying Firewall Flow Summaries Config# show ip routes firewall Displaying Firewall IP RoutesConfig# show ip firewall Displaying Firewall IP InformationOL-5650-02 D E IN-1IN-2 FTP IN-3Radius IN-4XML IN-5IN-6