Packet FilteringTypes of ACLsStandard ACLsExtended ACLsIPv6 ACLsEtherType ACLsWebVPN ACLsComparing ACL FeaturesConfiguring Packet FilteringStep 1: Set Up an ACLStep 2: Apply an ACL to an InterfaceStep 3: Set Up an IPv6 ACL (Optional)Advanced ACL FeaturesObject GroupingObject TypesProtocolNetworkServiceICMP-TypeObject Grouping and ACLsStandard ACLsTime-Based ACLsAbsolutePeriodicDownloadable ACLsICMP FilteringContent and URL FilteringContent FilteringActiveX FilteringJava FilteringConfiguring Content FilteringURL FilteringConfiguring URL FilteringStep 1: Defining a Filtering ServerStep 2: Configuring HTTP, HTTPS, and FTP FilteringStep 3: Buffering Server Responses (Optional)Step 4: Enabling Long URL Support (Optional)Step 5: Caching Server Responses (Optional)Deployment Scenarios Using ACLsUsing ACLs to Filter Inbound and Outbound TrafficEnabling Content Filtering Using WebsenseMonitoring Network Access ControlMonitoring ACLsMonitoring Content FilteringUnderstanding Address TranslationNetwork Address TranslationPort Address TranslationPacket Flow SequenceConfiguring Address TranslationStatic NATDynamic Network Address TranslationStatic Port Address TranslationDynamic Port Address TranslationPolicy NAT/PATBypassing Address TranslationIdentity NATNAT ExemptionNAT Order of OperationIntegrating ACLs and NATDNS DoctoringMonitoring Address TranslationsSummary