Cisco Systems ASA 5555-X, ASA 5505, ASA 5545-X Configuring DNS Inspection, Click Configure, 11-16

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Chapter 11 Configuring Inspection of Basic Internet Protocols

DNS Inspection

map that have the same match, then the order in the configuration determines which match is used, so these buttons are enabled. See the “Guidelines and Limitations” section on page 2-2for more information.

Step 10 Click OK to save the DNS inspect map.

Step 11 Click Apply.

Configuring DNS Inspection

The default ASA configuration includes many default inspections on default ports applied globally on all interfaces. A common method for customizing the inspection configuration is to customize the default global policy. The steps in this section show how to edit the default global policy, but you can alternatively create a new service policy as desired, for example, an interface-specific policy.

Detailed Steps

Step 1 Configure a service policy on the Configuration > Firewall > Service Policy Rules pane according to Chapter 1, “Configuring a Service Policy.”

You can configure DNS inspection as part of a new service policy rule, or you can edit an existing service policy.

Step 2 On the Rule Actions dialog box, click the Protocol Inspections tab.

Step 3 (To change an in-use policy) If you are editing any in-use policy to use a different DNS inspection policy map, you must disable the DNS inspection, and then re-enable it with the new DNS inspection policy map name:

a.Uncheck the DNS check box.

b.Click OK.

c.Click Apply.

d.Repeat these steps to return to the Protocol Inspections tab.

Step 4 Check the DNS check box.

Step 5 Click Configure.

The Select DNS Inspect Map dialog appears.

Step 6 Choose the inspection map:

•To use the default map, click Use the default DNS inspection map (preset_dns_map).

•To use a DNS inspection policy map that you configured in the “(Optional) Configuring a DNS Inspection Policy Map and Class Map” section on page 11-3, select the map name.

•To add a new map, click Add. See the “(Optional) Configuring a DNS Inspection Policy Map and Class Map” section on page 11-3for more information.

Step 7 If you use the Botnet Traffic Filter, click Enable Botnet traffic filter DNS snooping. Botnet Traffic Filter snooping compares the domain name with those on the dynamic database or static database, and adds the name and IP address to the Botnet Traffic Filter DNS reverse lookup cache. This cache is then used by the Botnet Traffic Filter when connections are made to the suspicious address. We suggest that you enable DNS snooping only on interfaces where external DNS requests are going. Enabling DNS snooping on all UDP DNS traffic, including that going to an internal DNS server, creates unnecessary

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Contents Cisco ASA Series Firewall Asdm Configuration Guide Software VersionCisco ASA Series Firewall Asdm Configuration Guide N T E N T S NAT for VPN Guidelines and Limitations Default Settings NAT and Same Security Level Interfaces Configuring Access Rules Getting Started with Application Layer Protocol Inspection Select IM Map Add/Edit H.323 Match Criterion SIP Class Map Select Radius Accounting Map Cisco Unified Communications Manager Prerequisites ACL Rules Configuring the TLS Proxy for Encrypted Voice Inspection Creating the TLS Proxy TCP Intercept and Limiting Embryonic Connections Blocks Monitoring Cloud Web Security Related Documents IP Audit Policy Licensing Requirements for the ASA CX Module Operating Modes Management Access Host/Networks Related Documentation About This GuideDocument Objectives Bold font ConventionsConvention Indication Configuring Service Policies Page Supported Features Configuring a Service PolicyInformation About Service Policies For Through Feature DirectionalityFeature Traffic? See Accounting onlyGlobal Direction Feature Matching Within a Service PolicyFeature Order in Which Multiple Feature Actions are Applied ASA IPS ASA CXFeature Matching for Multiple Service Policies Licensing Requirements for Service PoliciesIncompatibility of Certain Feature Actions Guidelines and Limitations Default Settings Default ConfigurationDefault Traffic Classes Task Flows for Configuring Service PoliciesAdding a Service Policy Rule for Through Traffic Task Flow for Configuring a Service Policy RuleCisco ASA Series Firewall Asdm Configuration Guide Click Next Click Match or Do Not Match Cisco ASA Series Firewall Asdm Configuration Guide Adding a Service Policy Rule for Management Traffic Configuring a Service Policy Rule for Management TrafficClick Match or Do Not Match Managing the Order of Service Policy Rules Moving an ACE Introduced class-map type management, and inspect Feature History for Service PoliciesFeature Name Releases Feature Information Radius-accountingPage Information About Inspection Policy Maps Default Inspection Policy Maps Defining Actions in an Inspection Policy Map Choose Configuration Firewall Objects Inspect MapsChoose Configuration Firewall Objects Class Maps Identifying Traffic in an Inspection Class MapWhere to Go Next Feature History for Inspection Policy MapsConfiguring Network Address Translation Page Why Use NAT? Information About NAT ASA 8.3 and LaterNAT Terminology Static NAT NAT TypesNAT Types Overview Information About Static NATInformation About Static NAT with Port Translation Information About Static NAT with Port Address TranslationStatic NAT with Identity Port Translation Information About One-to-Many Static NAT Static Interface NAT with Port TranslationInformation About Other Mapping Scenarios Not Recommended Dynamic NAT 6shows a typical few-to-many static NAT scenarioInformation About Dynamic NAT 209.165.201.10Information About Dynamic PAT Dynamic PATDynamic NAT Disadvantages and Advantages Per-Session PAT vs. Multi-Session PAT Version 9.01 and Later Dynamic PAT Disadvantages and AdvantagesNAT in Routed and Transparent Mode Identity NATNAT in Routed Mode NAT in Transparent Mode13 NAT Example Transparent Mode Main Differences Between Network Object NAT and Twice NAT NAT and IPv6How NAT is Implemented Information About Network Object NAT Information About Twice NAT14 Twice NAT with Different Destination Addresses 15 Twice NAT with Different Destination Ports 16 Twice Static NAT with Destination Address Translation NAT Rule Order Rule Type Order of Rules within the SectionNAT Interfaces 10.1.2.0Routing NAT Packets Mapped Addresses and Routing18 Proxy ARP Problems with Identity NAT Transparent Mode Routing Requirements for Remote Networks Determining the Egress InterfaceNAT and Remote Access VPN NAT for VPNSrc 203.0.113.16070 4. Http request to NAT and Site-to-Site VPN DstSee the following sample NAT configuration for ASA1 Boulder NAT and VPN Management Access Subnet 10.2.2.025 VPN Management Access Enter show nat detail and show conn all Troubleshooting NAT and VPNDNS and NAT Repeat show nat detail and show conn all26 DNS Reply Modification, DNS Server on Outside 192.168.1.10 28 DNS Reply Modification, DNS Server on Host Network 2001DB8D1A5C8E1 30 PTR Modification, DNS Server on Host Network Configuring Network Object NAT ASA 8.3 and Later Information About Network Object NATLicensing Requirements for Network Object NAT Prerequisites for Network Object NATAdditional Guidelines Configuring Network Object NAT Configuring Dynamic NAT or Dynamic PAT Using a PAT PoolDetailed Steps Check the Add Automatic Translation Rules check box Configuring Network Object NAT ASA 8.3 and Later Configuring Dynamic PAT Hide Configuring Network Object NAT ASA 8.3 and Later Check the Add Automatic Translation Rules check box Configuring Static NAT or Static NAT-with-Port-Translation Add NAT to a new or existing network objectConfiguring Network Object NAT ASA 8.3 and Later Check the Add Automatic Translation Rules check box Configuring Network Object NAT ASA 8.3 and Later Configuring Identity NAT From the Type drop-down list, choose Static Configuring Network Object NAT ASA 8.3 and Later Configuring Per-Session PAT Rules DefaultsMonitoring Network Object NAT FieldsConfiguration Examples for Network Object NAT Providing Access to an Inside Web Server Static NAT Static NAT for an Inside Web ServerCisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Dynamic NAT for Inside, Static NAT for Outside Web Server Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Static NAT with One-to-Many for an Inside Load Balancer Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Static NAT-with-Port-Translation Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Create a network object for the FTP server address Cisco ASA Series Firewall Asdm Configuration Guide DNS Reply Modification Using Outside NAT Cisco ASA Series Firewall Asdm Configuration Guide 2001DB8D1A5C8E1 IPv6 Net DNS Reply Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide No-proxy-arp and route-lookup keywords, to maintain Feature History for Network Object NATPlatform Feature Name Releases Feature Information This feature is not available in 8.51 or Platform Feature Name Releases Feature Information Platform Feature Name Releases Feature Information Platform Feature Name Releases Feature Information Page Configuring Twice NAT ASA 8.3 and Later Information About Twice NATLicensing Requirements for Twice NAT Prerequisites for Twice NATIPv6 Guidelines Configuring Twice NAT Choose Configuration Firewall NAT Rules, and then click Add Configuring Twice NAT ASA 8.3 and Later Source Destination Source Destination Configuring Twice NAT ASA 8.3 and Later Configuring Twice NAT ASA 8.3 and Later Click OK To configure dynamic PAT, perform the following steps Configuring Twice NAT ASA 8.3 and Later Source Destination Configuring Twice NAT ASA 8.3 and Later Source Destination Configuring Twice NAT ASA 8.3 and Later To configure static NAT, perform the following steps Configuring Twice NAT ASA 8.3 and Later Source Destination Source Destination Configuring Twice NAT ASA 8.3 and Later Configuring Twice NAT ASA 8.3 and Later To configure identity NAT, perform the following steps Configuring Twice NAT ASA 8.3 and Later 10.1.2.2 Source Destination Configuring Twice NAT ASA 8.3 and Later Monitoring Twice NAT Configuration Examples for Twice NAT Twice NAT with Different Destination Addresses Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Click Apply Twice NAT with Different Destination Ports Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Cisco ASA Series Firewall Asdm Configuration Guide Click Apply Feature History for Twice NAT This feature is not available in 8.51 or Platform Feature Name Releases Feature Information Platform Feature Name Releases Feature Information Page Introduction to NAT Configuring NAT ASA 8.2 and EarlierNAT Overview NAT Example Routed Mode NAT in Transparent Mode NAT Control 209.165.201.1NAT Control and Same Security Traffic NAT Types Dynamic NATRemote Host Attempts to Connect to the Real Address PAT Static NAT Static PATBypassing NAT When NAT Control is Enabled Policy NAT Policy NAT with Different Destination Addresses NAT and Same Security Level Interfaces 11 Policy Static NAT with Destination Address TranslationDNS and NAT Order of NAT Rules Used to Match Real AddressesMapped Address Guidelines 12 DNS Reply Modification Configuring NAT Control 13 DNS Reply Modification Using Outside NATUsing Dynamic NAT Dynamic NAT ImplementationReal Addresses and Global Pools Paired Using a Pool ID Global Pools on Different Interfaces with the Same Pool IDGlobal 1 Multiple Addresses in the Same Global Pool 16 Different NAT IDsOutside NAT 17 NAT and PAT TogetherManaging Global Pools 18 Outside NAT and Inside NAT CombinedConfiguring Dynamic NAT, PAT, or Identity NAT 19 Dynamic NAT ScenariosConfiguring NAT ASA 8.2 and Earlier Using Dynamic NAT Configuring Dynamic Policy NAT or PAT 20 Dynamic Policy NAT ScenariosConfiguring NAT ASA 8.2 and Earlier Using Dynamic NAT Using Static NAT Configuring Static NAT, PAT, or Identity NAT InsideUse IP Address Use Interface IP AddressClick OK Configuring Static Policy NAT, PAT, or Identity NAT 22 Static Policy NAT ScenariosUse IP Address Using NAT Exemption Click Action ExemptClick Action Do not exempt Configuring Access Control Page Configuring Access Rules Information About Access RulesGeneral Information About Rules Implicit PermitsRule Order Using RemarksNAT and Access Rules Implicit DenyTransactional-Commit Model Outbound ACLAdditional Guidelines and Limitations Information About Access RulesAccess Rules for Returning Traffic Supported EtherTypes and Other Traffic Management Access RulesInformation About EtherType Rules Traffic Type Protocol or PortAllowing Mpls Licensing Requirements for Access RulesDefault Settings Choose Configuration Firewall Access Rules Configuring Access RulesAdding an Access Rule Adding an EtherType Rule Transparent Mode Only Configuring Management Access Rules Advanced Access Rule Configuration PrerequisitesCheck the Enable Object Group Search Algorithm check box Configuring Http RedirectAccess Rule Explosion Edit HTTP/HTTPS Settings Configuring Transactional Commit ModelFeature History for Access Rules Platform Feature Name Releases Feature Information Page Licensing Requirements for AAA Rules Configuring AAA Rules for Network AccessAAA Performance Configuring Authentication for Network Access Information About AuthenticationOne-Time Authentication ASA Authentication PromptsDeployment Supporting Cut-through Proxy Authentication AAA Prompts and Identity FirewallAAA Rules as a Backup Authentication Method Static PAT and HttpConfiguring Network Access Authentication Authenticate Do not AuthenticateClick OK Enabling Secure Authentication of Web Clients Authenticating Directly with the ASA Authenticating Https Connections with a Virtual ServerAuthenticating Telnet Connections with a Virtual Server Configuring the Authentication Proxy Limit Choose Configuration Firewall AAA Rules, then click AdvancedAuthorize Do not Authorize Configuring Authorization for Network AccessConfiguring TACACS+ Authorization Configuring Radius Authorization About the Downloadable ACL Feature and Cisco Secure ACS Configuring Cisco Secure ACS for Downloadable ACLs Configuring Any Radius Server for Downloadable ACLs Configuring Accounting for Network Access Account Do not Account MAC Exempt No MAC Exempt Feature History for AAA Rules Licensing Requirements for Public Servers Configuring Public ServersInformation About Public Servers Adding a Public Server that Enables Static NAT Adding a Public Server that Enables Static NAT with PATEditing Settings for a Public Server Feature History for Public Servers Configuring Application Inspection Page 10-1 Getting Started with Application Layer Protocol InspectionHow Inspection Engines Work When to Use Application Protocol Inspection 10-2Failover Guidelines 10-310-4 Default Settings and NAT Limitations323 H.225 Server over IP NetBIOS NameIP Options 10-5Sun RPC over SmtpSQL*Net 10-610-7 Configuring Application Layer Protocol InspectionChoose Configuration Firewall Service Policy Rules 10-8 11-1 Configuring Inspection of Basic Internet ProtocolsDNS Inspection General Information About DNS Default Settings for DNS InspectionInformation About DNS Inspection DNS Inspection ActionsChoose Configuration Firewall Objects Inspect Maps DNS 11-3Detailed Steps-Protocol Conformance 11-4Detailed Steps-Filtering 11-5Detailed Steps-Inspections 11-611-7 11-8 11-9 Header Flag 11-1011-11 DNS Type Field ValueClass 11-12 Resource Record 11-13Domain Name 11-1411-15 11-16 Configuring DNS InspectionClick Configure FTP Inspection Overview Using Strict FTPFTP Inspection 11-17Select FTP Map 11-18Add/Edit FTP Traffic Class Map Configuration Global Objects Class Maps FTPFTP Class Map 11-19Add/Edit FTP Match Criterion 11-2011-21 Configuration Global Objects Inspect Maps FTPFTP Inspect Map 11-22 File Type FilteringAdd/Edit FTP Policy Map Security Level Add/Edit FTP Policy Map Details 11-23Add/Edit FTP Map 11-24Verifying and Monitoring FTP Inspection 11-25Select Http Map Http InspectionHttp Inspection Overview 11-26Add/Edit Http Traffic Class Map Configuration Global Objects Class Maps HttpHttp Class Map 11-27Add/Edit Http Match Criterion 11-2811-29 11-30 11-31 11-32 Configuration Global Objects Inspect Maps HttpHttp Inspect Map 11-33 URI FilteringAdd/Edit Http Policy Map Security Level Add/Edit Http Policy Map Details 11-34Add/Edit Http Map 11-3511-36 11-37 11-38 Instant Messaging Inspection Icmp Error InspectionIcmp Inspection 11-3911-40 IM Inspection OverviewAdding a Class Map for IM Inspection IP Options Inspection Overview IP Options InspectionSelect IM Map 11-41Configuring IP Options Inspection 11-42Select IP Options Inspect Map 11-4311-44 IP Options Inspect MapAdd/Edit IP Options Inspect Map 11-45 IPsec Pass Through InspectionIPsec Pass Through Inspection Overview 11-46 Select IPsec-Pass-Thru MapIPsec Pass Through Inspect Map 11-47 Add/Edit IPsec Pass Thru Policy Map Security LevelAdd/Edit IPsec Pass Thru Policy Map Details IPv6 Inspection Default Settings for IPv6 InspectionOptional Configuring an IPv6 Inspection Policy Map Information about IPv6 InspectionConfiguring IPv6 Inspection 11-49Select Netbios Map NetBIOS InspectionNetBIOS Inspection Overview 11-50Configuration Global Objects Inspect Maps NetBIOS NetBIOS Inspect MapAdd/Edit NetBIOS Policy Map Pptp Inspection11-52 Smtp and Extended Smtp InspectionSmtp and Esmtp Inspection Overview Select Esmtp Map 11-5311-54 Configuration Global Objects Inspect Maps EsmtpEsmtp Inspect Map 11-55 Mime File Type FilteringAdd/Edit Esmtp Policy Map Security Level Add/Edit Esmtp Policy Map Details 11-56Add/Edit Esmtp Inspect 11-5711-58 11-59 Tftp Inspection 11-6011-61 11-62 Ctiqbe Inspection Overview Configuring Inspection for Voice and Video ProtocolsCtiqbe Inspection 12-112-2 InspectionLimitations and Restrictions 12-3 Inspection OverviewHow H.323 Works Support in H.245 Messages 12-4Class Map Configuration Global Objects Class Maps H.323Select H.323 Map 12-512-6 Add/Edit H.323 Traffic Class MapAdd/Edit H.323 Match Criterion 12-7 Configuration Global Objects Inspect Maps H.323Inspect Map 12-8 Phone Number FilteringAdd/Edit H.323 Policy Map Security Level Add/Edit H.323 Policy Map Details 12-912-10 12-11 Add/Edit HSI GroupAdd/Edit H.323 Map 12-12 Mgcp InspectionMgcp Inspection Overview Using NAT with Mgcp 12-13Mgcp Inspect Map Configuration Global Objects Inspect Maps MgcpSelect Mgcp Map 12-1412-15 Gateways and Call AgentsAdd/Edit Mgcp Policy Map 12-16 Rtsp InspectionAdd/Edit Mgcp Group 12-17 Using RealPlayerRtsp Inspection Overview Select Rtsp Map Configuration Global Objects Inspect Maps RadiusRestrictions and Limitations Rtsp Inspect MapRtsp Class Map Configuration Firewall Objects Class Maps RtspAdd/Edit Rtsp Policy Map 12-1912-20 SIP InspectionAdd/Edit Rtsp Traffic Class Map SIP Inspection Overview 12-2112-22 SIP Instant MessagingSelect SIP Map 12-23 Configuration Global Objects Class Maps SIPSIP Class Map 12-24 Add/Edit SIP Traffic Class MapAdd/Edit SIP Match Criterion 12-25 12-26 Configuration Global Objects Inspect Maps SIPSIP Inspect Map Add/Edit SIP Policy Map Security Level 12-27Add/Edit SIP Policy Map Details 12-2812-29 Add/Edit SIP Inspect 12-3012-31 12-32 Skinny Sccp InspectionSccp Inspection Overview Supporting Cisco IP Phones 12-33Sccp Skinny Inspect Map Configuration Global Objects Inspect Maps Sccp SkinnySelect Sccp Skinny Map 12-34Message ID Filtering 12-35Add/Edit Sccp Skinny Policy Map Security Level 12-36Add/Edit Sccp Skinny Policy Map Details 12-37Add/Edit Message ID Filter 12-3813-1 Configuring Inspection of Database Directory ProtocolsILS Inspection SQL*Net Inspection 13-2Sun RPC Inspection Overview Configuration Properties Sunrpc ServerSun RPC Inspection Sunrpc ServerAdd/Edit Sunrpc Service 13-4Dcerpc Overview Configuring Inspection for Management Application ProtocolsDcerpc Inspection 14-1Dcerpc Inspect Map Configuration Global Objects Inspect Maps DcerpcSelect Dcerpc Map 14-2Add/Edit Dcerpc Policy Map 14-3GTP Inspection 14-414-5 GTP Inspection OverviewSelect GTP Map 14-6 Configuration Global Objects Inspect Maps GTPGTP Inspect Map 14-7 Imsi Prefix FilteringAdd/Edit GTP Policy Map Security Level Add/Edit GTP Policy Map Details 14-8Add/Edit GTP Map 14-9Radius Accounting Inspection 14-10Add Radius Accounting Policy Map Radius Accounting Inspection OverviewSelect Radius Accounting Map 14-1114-12 Radius Inspect MapRadius Inspect Map Host Radius Inspect Map Other RSH InspectionSnmp Inspection 14-13Snmp Inspect Map Snmp Inspection OverviewSelect Snmp Map Add/Edit Snmp MapXdmcp Inspection 14-1514-16 Configuring Unified Communications Page 15-1 15-2 TLS Proxy Applications in Cisco Unified Communications 15-3Model License Requirement1 15-415-5 15-6 Using the Cisco Unified Communication Wizard 16-116-2 Licensing Requirements for the Unified Communication Wizard 16-316-4 Configuring the Private Network for the Phone Proxy 16-516-6 Configuring Servers for the Phone ProxyClick the Generate and Export LDC Certificate button Address Default Port Description 16-716-8 Configuring the Public IP Phone Network 16-916-10 16-11 16-12 16-13 16-14 Certificate, 16-1516-16 16-17 16-18 Basic DeploymentOff-path Deployment 16-19 16-20 16-21 16-22 16-23 Installing a CertificateExporting an Identity Certificate Click Install Certificate 16-24Saving the Identity Certificate Request 16-2516-26 16-27 16-28 Phone Proxy Functionality Configuring the Cisco Phone ProxyInformation About the Cisco Phone Proxy 17-117-2 TCP/RTP TLS/SRTPCisco Unified IP Phones Supported Cisco UCM and IP Phones for the Phone ProxyCisco Unified Communications Manager 17-3Licensing Requirements for the Phone Proxy 17-417-5 17-6 Prerequisites for the Phone ProxyMedia Termination Instance Prerequisites Cisco Unified Communications Manager Prerequisites Certificates from the Cisco UCMDNS Lookup Prerequisites ACL RulesNAT Prerequisites NAT and PAT PrerequisitesAddress Port Protocol Description PAT Prerequisites17-9 Prerequisites for IP Phones on Multiple Interfaces7940 IP Phones Support 17-10 Cisco IP Communicator PrerequisitesPrerequisites for Rate Limiting Tftp Requests Ways to Deploy IP Phones to End Users Rate Limiting Configuration ExampleEnd-User Phone Provisioning 17-1117-12 Phone Proxy Guidelines and LimitationsGeneral Guidelines and Limitations Media Termination Address Guidelines and Limitations 17-1317-14 Configuring the Phone ProxyTask Flow for Configuring the Phone Proxy Creating the CTL File 17-15Adding or Editing a Record Entry in a CTL File 17-16Creating the Media Termination Instance 17-17Creating the Phone Proxy Instance 17-1817-19 Adding or Editing the Tftp Server for a Phone Proxy 17-2017-21 Configuring Your RouterLinksys Routers Checked Feature History for the Phone ProxyApplication Start End Protocol IP Address Enabled 17-2218-1 18-2 TLS Proxy Flow Cisco IP Phone Cisco ASASupported Cisco UCM and IP Phones for the TLS Proxy 18-3Licensing for the TLS Proxy 18-418-5 CTL Provider 18-6Add/Edit CTL Provider 18-7Configure TLS Proxy Pane 18-818-9 Add TLS Proxy Instance Wizard Server ConfigurationAdding a TLS Proxy Instance Add TLS Proxy Instance Wizard Client Configuration 18-1018-11 Add TLS Proxy Instance Wizard Other Steps 18-12Edit TLS Proxy Instance Server Configuration 18-13Edit TLS Proxy Instance Client Configuration 18-1418-15 18-16 TLS ProxyAdd/Edit TLS Proxy 18-17 18-18 19-1 Configuring Cisco Mobility AdvantageCisco Mobility Advantage Proxy Functionality Mobility Advantage Proxy Deployment Scenarios 19-219-3 MMP/SSL/TLS19-4 Mobility Advantage Proxy Using NAT/PATTrust Relationships for Cisco UMA Deployments 19-5 Configuring Cisco Mobility Advantage 19-619-7 Feature History for Cisco Mobility AdvantageTask Flow for Configuring Cisco Mobility Advantage 19-8 20-1 Configuring Cisco Unified PresenceInformation About Cisco Unified Presence 20-2 Typical Cisco Unified Presence/LCS Federation Scenario20-3 SIP/TLSTrust Relationship in the Presence Federation 20-4Xmpp Federation Deployments 20-5Configuration Requirements for Xmpp Federation 20-6Licensing for Cisco Unified Presence 20-7Configuring Cisco Unified Presence Proxy for SIP Federation 20-8Feature History for Cisco Unified Presence 20-920-10 21-1 Configuring Cisco Intercompany Media Engine ProxyFeatures of Cisco Intercompany Media Engine Proxy How the UC-IME Works with the Pstn and the Internet 21-2Tickets and Passwords 21-321-4 21-5 Call Fallback to the PstnArchitecture Basic Deployment 21-6Off Path Deployment 21-7Licensing for Cisco Intercompany Media Engine 21-821-9 21-10 21-11 Configuring Cisco Intercompany Media Engine ProxyTask Flow for Configuring Cisco Intercompany Media Engine Configuring NAT for Cisco Intercompany Media Engine Proxy 21-12Command Purpose 21-13What to Do Next Configuring PAT for the Cisco UCM ServerCommand Purpose 21-14Address of Cisco UCM that you want to translate 21-15Creating ACLs for Cisco Intercompany Media Engine Proxy 21-1621-17 ProcedureGuidelines Creating the Cisco Intercompany Media Engine Proxy 21-18See Creating the Media Termination Instance 21-19Show running-config uc-ime command 21-20Creating Trustpoints and Generating Certificates 21-21Prerequisites for Installing Certificates 21-22Certified 21-23Creating the TLS Proxy 21-2421-25 ACLs for Cisco Intercompany Media Engine Proxy 21-26Optional Configuring TLS within the Local Enterprise 21-27Commands Purpose 21-2821-29 Where proxytrustpoint for the server trust-pointWhere proxytrustpoint for the client trust-point Optional Configuring Off Path Signaling 21-30Engine Proxy, 21-3121-32 21-33 Show uc-ime signaling-sessions 21-3421-35 Show uc-ime signaling-sessions statisticsShow uc-ime media-sessions detail Show uc-ime fallback-notification statistics Show uc-ime mapping-service-sessionsShow uc-ime mapping-service-sessions statistics 21-36Feature History for Cisco Intercompany Media Engine Proxy 21-3721-38 Configuring Connection Settings and QoS Page 22-1 Configuring Connection SettingsInformation About Connection Settings 22-2 TCP Intercept and Limiting Embryonic ConnectionsDead Connection Detection DCD TCP State Bypass TCP Sequence RandomizationTCP Normalization 22-3Licensing Requirements for Connection Settings 22-4TCP State Bypass TCP State Bypass Unsupported FeaturesMaximum Concurrent and Embryonic Connection Guidelines 22-5Customizing the TCP Normalizer with a TCP Map Configuring Connection SettingsTask Flow For Configuring Connection Settings 22-622-7 Configuring Connection Settings 22-8Configuring Global Timeouts 22-922-10 Tcp-state-bypass Feature History for Connection SettingsIntroduced set connection advanced-options 22-1122-12 23-1 Configuring QoSInformation About QoS 23-2 Supported QoS FeaturesWhat is a Token Bucket? 23-3 Information About PolicingInformation About Priority Queuing 23-4 How QoS Features InteractInformation About Traffic Shaping Model Guidelines Licensing Requirements for QoSDscp and DiffServ Preservation 23-5Configuring QoS 23-6125 23-7Configuring the Standard Priority Queue for an Interface 23-8Click Enable priority for this flow 23-923-10 23-11 Monitoring QoSClick Enforce priority to selected shape traffic 23-12 Viewing QoS Police StatisticsViewing QoS Standard Priority Statistics 23-13 Viewing QoS Shaping StatisticsViewing QoS Standard Priority Queue Statistics Feature History for QoS 23-14Pinging ASA Interfaces Troubleshooting Connections and ResourcesTesting Your Configuration 24-1Network Diagram with Interfaces, Routers, and Hosts 24-2Information About Ping 24-3Pinging to an ASA Interface Troubleshooting the Ping ToolPinging From an ASA Interface Pinging Through the ASA InterfaceUsing the Ping Tool 24-524-6 Output Symbol DescriptionDetermining Packet Routing with Traceroute Tracing Packets with Packet Tracer 24-7Monitoring Performance 24-824-9 Monitoring System ResourcesBlocks Memory 24-10Monitoring Connections 24-11Monitoring Per-Process CPU Usage 24-12Configuring Advanced Network Protection Page Configuring the ASA for Cisco Cloud Web Security 25-1Redirection of Web Traffic to Cloud Web Security User Authentication and Cloud Web SecurityInformation About Cisco Cloud Web Security 25-225-3 Authentication KeysCompany Authentication Key Group Authentication Key Custom Groups ScanCenter PolicyDirectory Groups 25-425-5 How Groups and the Authentication Key InteroperateCloud Web Security Actions Bypassing Scanning with Whitelists Failover from Primary to Backup Proxy ServerLicensing Requirements for Cisco Cloud Web Security IPv4 and IPv6 SupportOptional Fully Qualified Domain Name Prerequisites Optional User Authentication PrerequisitesPrerequisites for Cloud Web Security 25-7Configuring Cisco Cloud Web Security 25-8Choose Configuration Device Management Cloud Web Security 25-925-10 25-11 25-12 25-13 25-14 25-15 25-16 Examples 25-1725-18 Check Cloud Web Security and click Configure 25-1925-20 Tcp/http 25-2125-22 Optional Configuring Whitelisted Traffic 25-2325-24 Optional Configuring the User Identity Monitor 25-2525-26 Configuring the Cloud Web Security PolicyMonitoring Cloud Web Security Related Documents Feature History for Cisco Cloud Web SecurityRelated Documents 25-2725-28 26-1 Configuring the Botnet Traffic FilterInformation About the Botnet Traffic Filter Botnet Traffic Filter Databases Botnet Traffic Filter Address TypesBotnet Traffic Filter Actions for Known Addresses Information About the Dynamic DatabaseInformation About the Static Database 26-326-4 How the Botnet Traffic Filter Works 26-526-6 Licensing Requirements for the Botnet Traffic FilterPrerequisites for the Botnet Traffic Filter 26-7 Configuring the Botnet Traffic FilterTask Flow for Configuring the Botnet Traffic Filter Configuring the Dynamic Database 26-826-9 Adding Entries to the Static DatabaseEnabling DNS Snooping 26-10 Recommended Configuration 26-1126-12 Blocking Botnet Traffic ManuallyVery Low Moderate High Very High Searching the Dynamic Database 26-1326-14 Monitoring the Botnet Traffic FilterBotnet Traffic Filter Syslog Messaging Botnet Traffic Filter Monitor Panes 26-15Feature History for the Botnet Traffic Filter 26-16Licensing Requirements for Threat Detection Configuring Threat DetectionInformation About Threat Detection 27-127-2 Configuring Basic Threat Detection StatisticsInformation About Basic Threat Detection Statistics Security Context Guidelines Trigger Settings Packet Drop Reason Average Rate Burst RateGuidelines and Limitations Types of Traffic MonitoredPath Purpose Configuring Basic Threat Detection StatisticsMonitoring Basic Threat Detection Statistics 27-4Information About Advanced Threat Detection Statistics Configuring Advanced Threat Detection StatisticsFeature History for Basic Threat Detection Statistics 27-527-6 Configuring Advanced Threat Detection StatisticsChoose the Configuration Firewall Threat Detection pane 27-7 Monitoring Advanced Threat Detection StatisticsLast 24 hour 27-8 Configuring Scanning Threat DetectionFeature History for Advanced Threat Detection Statistics Information About Scanning Threat Detection 27-927-10 Configuring Scanning Threat DetectionAverage Rate Burst Rate Feature History for Scanning Threat Detection 27-1127-12 Preventing IP Spoofing Using Protection ToolsConfiguration Firewall Advanced Anti-Spoofing Fields 28-128-2 Configuring the Fragment SizeShow Fragment Configuring TCP Options 28-3TCP Reset Settings 28-4IP Audit Policy Configuring IP Audit for Basic IPS SupportAdd/Edit IP Audit Policy Configuration 28-5Signature Message Number Signature Title IP Audit SignaturesIP Audit Signature List 28-628-7 Message Number Signature Title 28-828-9 28-10 28-11 28-12 29-1 Configuring Filtering ServicesInformation About Web Traffic Filtering 29-2 Filtering URLs and FTP Requests with an External ServerInformation About URL Filtering Identifying the Filtering Server Licensing Requirements for URL FilteringGuidelines and Limitations for URL Filtering 29-3Configuring Additional URL Filtering Settings 29-429-5 Buffering the Content Server ResponseCaching Server Addresses 29-6 Configuring Filtering RulesFiltering Http URLs 29-7 29-8 29-9 29-10 Filtering the Rule Table 29-1129-12 Feature History for URL FilteringDefining Queries Configuring Modules Page 30-1 Configuring the ASA CX ModuleInformation About the ASA CX Module How the ASA CX Module Works with the ASA 30-2Traffic-Forwarding Interface in Monitor-Only Mode Monitor-Only ModeService Policy in Monitor-Only Mode 30-330-4 Initial ConfigurationInformation About ASA CX Management Policy Configuration and Management Information About Authentication ProxyCompatibility with ASA Features Information About VPN and the ASA CX Module30-6 Licensing Requirements for the ASA CX ModulePrerequisites 30-7 Monitor-Only Mode GuidelinesASA Clustering Guidelines Task Flow for the ASA CX Module Configuring the ASA CX ModuleParameters Default 30-830-9 Connecting the ASA CX Management InterfaceASA 5585-X Hardware Module 30-10 If you have an inside routerIf you do not have an inside router ASA 5512-X through ASA 5555-X Software Module 30-1130-12 Example 30-1330-14 Multiple Context ModeASA 5585-X Changing the ASA CX Management IP Address Example Single Context ModeSets the ASA CX management IP address, mask, and gateway ASDM, choose Wizards Startup WizardConfiguring Basic ASA CX Settings at the ASA CX CLI 30-1630-17 Optional Configuring the Authentication Proxy Port 30-1830-19 Creating the ASA CX Service PolicyRedirecting Traffic to the ASA CX Module Click the ASA CX Inspection tab 30-20Check the Enable ASA CX for this traffic flow check box 30-2130-22 Configuring Traffic-Forwarding Interfaces Monitor-Only ModeChoose Tools Command Line Interface 30-23 Resetting the PasswordManaging the ASA CX Module Reloading or Resetting the Module 30-24Shutting Down the Module 30-2530-26 30-27 Admin123Monitoring the ASA CX Module Monitoring Module Connections Showing Module StatusShowing Module Statistics Module30-29 Ciscoasa# show asp table classify domain cxsc Input Table30-30 30-31 Ciscoasa# show asp dropCapturing Module Traffic Troubleshooting the ASA CX ModuleProblems with the Authentication Proxy 30-32Feature History for the ASA CX Module 30-33Capture interface asadataplane command 30-3431-1 Configuring the ASA IPS ModuleInformation About the ASA IPS Module How the ASA IPS Module Works with the ASA 31-231-3 Using Virtual Sensors ASA 5510 and HigherOperating Modes Information About Management Access 31-4Licensing Requirements for the ASA IPS module 31-5Vlan 31-631-7 Configuring the ASA IPS moduleTask Flow for the ASA IPS Module Connecting the ASA IPS Management Interface 31-831-9 ASA 31-10Sessioning to the Module from the ASA May Be Required 31-1131-12 ASA 5512-X through ASA 5555-X Booting the Software ModuleConfiguring Basic IPS Module Network Settings 31-13 ASA 5510 and Higher Configuring Basic Network SettingsChoose Wizards Startup Wizard 31-14 ASA 5505 Configuring Basic Network SettingsASDM, choose Configuration Device Setup SSC Setup Configuring the Security Policy on the ASA IPS Module 31-15Click Continue 31-1631-17 Diverting Traffic to the ASA IPS module 31-18Managing the ASA IPS module 31-19Installing and Booting an Image on the Module 31-2031-21 Uninstalling a Software Module Image 31-2231-23 Monitoring the ASA IPS module 31-24Feature History for the ASA IPS module 31-2531-26 32-1 Configuring the ASA CSC ModuleInformation About the CSC SSM ASA 32-2Determining What Traffic to Scan 32-3Common Network Configuration for CSC SSM Scanning 32-432-5 Licensing Requirements for the CSC SSMPrerequisites for the CSC SSM Parameter Default 32-632-7 Configuring the CSC SSMBefore Configuring the CSC SSM Connecting to the CSC SSM 32-8Determining Service Policy Rule Actions for CSC Scanning 32-9CSC SSM Setup Wizard 32-1032-11 IP ConfigurationActivation/License Host/Notification Settings 32-1232-13 Management Access Host/NetworksPassword 32-14 Restoring the Default PasswordChoose Tools CSC Password Reset 32-15 Wizard SetupCSC Setup Wizard Activation Codes Configuration 32-16 CSC Setup Wizard IP ConfigurationCSC Setup Wizard Host Configuration CSC Setup Wizard Traffic Selection for CSC Scan CSC Setup Wizard Management Access ConfigurationCSC Setup Wizard Password Configuration 32-17Specifying Traffic for CSC Scanning 32-18CSC Setup Wizard Summary 32-19Web Using the CSC SSM GUIChoose Configuration Trend Micro Content Security Web 32-2032-21 MailSmtp Tab File Transfer 32-22Updates 32-23Threats Choose Monitoring Trend Micro Content Security ThreatsMonitoring the CSC SSM 32-2432-25 Live Security EventsLive Security Events Log Software Updates 32-26CSC Memory Troubleshooting the CSC ModuleResource Graphs 32-2732-28 Installing an Image on the ModuleRecover command Resetting the Password 32-29Shuts down the module Reloading or Resetting the ModuleShutting Down the Module 32-30Additional References Feature History for the CSC SSMFeature Name Platform Releases Feature Information Related Topic Document Title32-32 D E IN-1FTP Http IN-2CSC CPU IN-3CSC SSM GUI IN-4Application inspection IN-5IPS IN-6See also class map IN-7See Icmp IN-8See QoS IN-9See PAT IN-10URL IN-11IN-12
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ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications

Cisco Systems has long been a leader in the field of network security, and its Adaptive Security Appliance (ASA) series is a testament to this expertise. Within the ASA lineup, models such as the ASA 5505, ASA 5580, ASA 5585-X, ASA 5545-X, and ASA 5555-X stand out for their unique features, capabilities, and technological advancements.

The Cisco ASA 5505 is designed for small businesses or branch offices. It provides essential security features such as firewall protection, flexible VPN capabilities, and intrusion prevention. The ASA 5505 supports a user-friendly interface, allowing for straightforward management. Its built-in threat detection and prevention tools provide a layered defense, and with scalability in mind, it can accommodate various expansion options as organizational needs grow.

Moving up the line, the ASA 5580 delivers greater throughput and advanced security features. This model is suited for medium to large enterprises that require robust protection against increasingly sophisticated threats. Its multi-core architecture allows it to manage high volumes of traffic seamlessly while maintaining excellent performance levels. The ASA 5580 also supports application-layer security and customizable access policies, making it highly adaptable to diverse security environments.

The ASA 5585-X further enhances Cisco's security offerings with advanced malware protection and extensive security intelligence capabilities. It incorporates next-generation firewall features, including context-aware security, and supports advanced threat detection technologies. This model is ideal for large enterprises or data centers that prioritize security while ensuring uninterrupted network performance and availability.

For enterprises requiring a balance of performance and security, the ASA 5545-X presents a compelling option. This model features scalable performance metrics, high availability, and integrated advanced threat protection. Coupled with advanced endpoint protection and detailed monitoring capabilities, the ASA 5545-X enables organizations to manage their security posture effectively.

Lastly, the ASA 5555-X blends cutting-edge technologies with strong security infrastructures. It boasts high throughput and the ability to execute deep packet inspections. Its sophisticated architecture supports threat intelligence feeds that provide real-time security updates, making it a powerful tool against modern threats.

Each of these Cisco ASA models brings specific advantages to varied environments. Their integrative capabilities enable businesses to enhance their security postures while benefiting from seamless scalability and management. As cybersecurity threats evolve, these advanced appliances play a vital role in protecting valuable digital assets.
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