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Blue Coat Systems Proxy SG manual

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Blue Coat SystemsTM

ProxySG Content Policy Language Guide

Content Policy Language Guide

Contents

Main Page THIRD PARTY COPYRIGHT NOTICES Page Page Page Page Page Preface: Introducing the Content Policy Language About the Document Organization Supported Browsers Related Blue Coat Documentation Document Conventions Contents Page Page Page Page Page Page Page Chapter 1: Overview of Content Policy Language Concepts Transactions Policy Model Role of CPL CPL Language Basics Comments Rules Notes Quoting Layers Sections Definitions Named Definitions Anonymous Definitions Referential Integrity Substitutions Writing Policy Using CPL Authentication and Denial Installing Policy CPL General Use Characters and Formatting Troubleshooting Policy Upgrade/Downgrade Issues CPL Syntax Deprecations Conditional Compilation Page Chapter 2: Managing Content Policy Language Understanding Transactions and Timing Administrator Transactions Proxy Transactions Page Cache Transactions Forwarding Transactions Timing Understanding Layers <Admin> Layers <Cache> Layers <Exception> Layers <Forward> Layers <Proxy> Layers Layer Guards Timing Understanding Sections [Rule] [url] [url.domain] [url.regex] [server_url.domain] Section Guards Defining Policies Blacklists and Whitelists General Rules and Exceptions to a General Rule Using Rule Order to Define Exceptions Using Layer Ordering to Define Exceptions Avoid Conflicting Actions Making Policy Definitive Best Practices Chapter 3: Condition Reference Condition Syntax Pattern Types Unavailable Triggers Layer Type Restrictions Global Restrictions Condition Reference Page admin.access= attribute.name= Page authenticated= bitrate= Page category= client.address= client.protocol= condition= Page console_access= Page content_management date[.utc]= day= exception.id= Page ftp.method= group= Page has_attribute.name= Page has_client= hour= Conditions: date[.utc]=, day=, minute=, month=, time=, weekday=, year= http.method= http.request.version= http.response.code= http.response.version= http.transparent_authentication= http.x_method= im.buddy_id= im.chat_room.conference= im.chat_room.id= im.chat_room.invite_only= im.chat_room.type= im.chat_room.member= im.chat_room.voice_enabled= im.file.extension= im.file.name= im.file.path= im.file.size= im.message.opcode= im.message.route= im.message.size= im.message.text= im.message.type= im.method= im.user_id= live= method= Sy Page minute= month= protocol= proxy.address= proxy.card= proxy.port= realm= Page release.id= release.version= request.header.header_name= request.header.header_name.address= request.header.Referer.url= Page Conditions: Definitions: request.x_header.header_name= request.x_header.header_name.address= response.header.header_name= response.x_header.header_name= server_url= Applies to all non-administrator transactions. Examples Page socks= socks.accelerated= socks.method= socks.version= streaming.client= streaming.content= time= Conditions: date[.utc]=, day=, hour=, minute=, month=, weekday=, year= tunneled= url= Page Page Page Page Page Page user= Page user.domain= user.x509.issuer= user.x509.serialNumber= user.x509.subject= weekday= year= Page Page access_log( ) access_server( ) action( ) advertisement( ) allow always_verify( ) authenticate( ) Page authenticate.force( ) authenticate.mode( ) Page authenticate.use_url_cookie( ) block_catego ry( ) bypass_cache( ) cache( ) Page check_authorization( ) content_filter_override( ) cookie_sensitive( ) delete_on_abandonment( ) deny( ) deny.unauthorized( ) direct( ) dynamic_bypass( ) exception( ) exception.autopad( ) force_cache( ) force_deny( ) force_exception( ) force_patience_page( ) forward( ) forward.fail_open( ) ftp.server_connection( ) ftp.server_data( ) ftp.transport( ) http.force_ntlm_for_server_auth( ) http.request.version( ) http.response.version( ) icp( ) im.strip_attachments( ) integrate_new_hosts( ) Page log.rewrite.field-id() log.suppress.field-id( ) max_bitrate( ) never_refresh_before_expiry( ) never_serve_after_expiry( ) patience_page( ) pipeline( ) Page reflect_ip( ) Page refresh( ) remove_IMS_from_GET( ) remove_PNC_from_GET( ) remove_reload_from_IE_GET( ) request.filter_service( ) Page request.icap_service( ) response.icap_service( ) Page socks.accelerate( ) socks.authenticate( ) socks.authenticate.force( ) socks_gateway( ) socks_gateway.fail_open( ) streaming.transport( ) terminate_connection( ) trace.destination( ) trace.request( ) trace.rules( ) ttl( ) ua_sensitive( ) Chapter 5: Action Reference Argument Syntax Action Reference append( ) delete( ) delete_matching( ) im.alert( ) log_message( ) notify_email( ) notify_snmp( ) redirect( ) Page rewrite( ) Page Page set( ) Page transform Page Page Chapter 6: Definition Reference Definition Names define action Page define active_content Page define category Page define condition Conditions: category=, condition= P r o p e r t i e s : Page define javascript Page Page define server_url.domain condition Page define subnet define url condition Page define url.domain condition Page define url_rewrite Page restrict dns restrict rdns Page Page Appendix A: Glossar y definition Page Page Page Appendix B: Testing and Troubleshooting Enabling Rule Tracing Enabling Request Tracing Configuring the Path Using Trace Information to Improve Policies Page Page Page Page Appendix C: Recognized HTTP Headers The following table lists custom headers that are recognized by the ProxySG. Appendix D: CPL Substitutions Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix E: Filter File Syntax Filter File Overview Filter File Structure Filter-Part Components Filters Page ALL Statements Access-Control List (ACL) Definitions Sections Page default_filter_properties Statement Action-Part Components Evaluation Order Appendix F: Upgrading from CacheOS Using Backward-Compatibility Mode Converting Filter-Style Files to CPL Syntax Index

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