Cisco Systems OL-5650-02 specs

Chapter 5 Configuring Firewall Load Balancing

Configuring FWLB with VIP and Virtual Interface Redundancy

Configuring FWLB with VIP and Virtual Interface Redundancy

Configure FWLB with VIP and virtual interface redundancy to provide the following benefits:

•Very fast failover (typically 1 to 3 seconds)

•No single point of failure

•All CSSs forward traffic (active-backup configuration)

Note For details on configuring VIP and virtual interface Redundancy, refer to the Cisco Content Services Switch Redundancy Configuration Guide.

This configuration consists of two redundant CSSs and two Layer 2 devices on either side of the firewall. If a CSS fails, the redundant CSS on the same side of the firewall assumes the additional load.

Note When you configure FWLB with VIP and virtual interface redundancy, do not configure shared VIPs. Shared VIPs are not supported by the FWLB topology. For more information about shared VIPs, refer to the Cisco Content Services Switch Redundancy Configuration Guide.

You must configure the VIPs on the CSS that has the services directly connected to it or connected through a Layer 2 device. Do not configure content rules with VIPs on a CSS when the services are located on the other side of the firewall and connected to another CSS participating in FWLB. This type of configuration will result in asymmetric paths and could cause firewalls performing stateful inspection to tear down connections.

	Cisco Content Services Switch Security Configuration Guide
5-10	OL-5650-02

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Cisco Systems OL-5650-02 manual Configuring Fwlb with VIP and Virtual Interface Redundancy

Contents

Cisco Content Services Switch Security Configuration Guide Cisco Content Services Switch Security Configuration Guide N T E N T S Iii ACL Overview Configuring the CSS as a Client of a Radius Server Configuring Firewall Load Balancing Example of Fwlb Vii Viii B L E S OL-5650-02 Preface How to Use This Guide AudienceXii Related Documentation Xiii Rmon Xiv Document Title Description Symbols and Conventions Xvi Obtaining Documentation Cisco.comXvii Documentation Feedback Documentation DVDOrdering Documentation Xviii Reporting Security Problems in Cisco Products Cisco Product Security OverviewXix Obtaining Technical Assistance Cisco Technical Support Website Submitting a Service Request Xxi Definitions of Service Request Severity Xxii Xxiii Xxiv Controlling CSS Access Changing the Administrative Username and Password Config# username-offdm bobo password secret Creating Usernames and Passwords Config# username picard password captain superuser 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 Controlling Administrative Access to the CSS Enabling Administrative Access to the CSS Disabling Administrative Access to the CSS Config# no restrict web-mgmt Controlling CSS Network Traffic Through Access Control Lists Config# restrict telnet 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 Variables Options Parameters Show group ? Adding a Clause When ACLs are Globally Enabled Prefer 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 Disabling ACLs on the CSS Showing ACLs Field Description Setting the Show ACL Counters to Zero Logging ACL Activity Config-acl7#clause 1 log enable Config-acl7#clause 1 log disable Config# no logging subsystem acl ACL Example Configuring 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 192.168.0.0/16 Showing NQL Configurations Adding an NQL to an ACL Clause Configuring the Secure Shell Daemon Protocol Enabling SSH # license Configuring SSH Access Configuring Sshd in the CSSConfiguring Sshd Keepalive Config# no restrict ssh Configuring Sshd Port Configuring Sshd Server-Keybits Configuring Sshd Version Config# sshd server-keybitsConfig# no sshd server-keybits Config# sshd version Configuring Telnet Access When Using Sshd Showing Sshd ConfigurationsConfig# no restrict telnet # show sshd config # show sshd sessions Ptyfd # show sshd version 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 Configuring a Radius Server for Use with the CSS #config virtual authentication primary radius Configuring Authentication Settings Configuring Authorization Settings Specifying 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 timeout Configuring the Radius Server Dead-Time Config# no radius-server retransmitConfig# radius-server dead-time Config# no radius-server dead-time Config# show radius statistics secondary DOWN, Unknown 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 Setting the Global TACACS+ Keepalive Frequency #config tacacs-server key market#config tacacs-server key acskefterefesdtx #config no tacacs-server key Config# no tacacs-server frequency Defining a TACACS+ Server OL-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-config Setting TACACS+ Accounting Showing TACACS+ Server Configuration Information Field Description OL-5650-02 Configuring Firewall Load Balancing Overview of Fwlb Configuring Fwlb Firewall Synchronization 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 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 type1 Configuring RIP to Advertise Firewall Routes Example of Fwlb Static Route ConfigurationConfig# no ospf redistribute firewall Config# rip redistribute firewall Config# 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 firewall Example 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 Configuration CSS-IN-L Configuration Config# show flows 192.165.22.1 Config# show flowsDisplaying Firewall Flow Summaries Config# show ip routes firewall Displaying Firewall IP Routes Config# show ip firewall Displaying Firewall IP Information OL-5650-02 D E IN-1 IN-2 FTP IN-3 Radius IN-4 XML IN-5 IN-6