News server features | Intel 1520 instruction

N

news server features 138

NNTP

access control 32 caching 139 configuring 31 dynamic subscription 142 feed groups 32

object freshness 141 push groups 32

O

object store 144 online help 15 origin server 114

P

parent cache 135 configuring HTTP 40 HTTP 135

parent failover 135 performance 143 pin-in-cache 81 proxy caching

about 114

explicit and transparent 114 HTTP alternates 119 whether to cache 119

pull group 142 pullover group 141 push group 142

R

RAM cache about 144

redirects 131 revalidation 116 reverse proxy

about 128

S

security

NNTP access control 32 server accelerator

about 128 configuring 43

Setting Virtual IP addressing 26 snapshots

configuring 47

SNMP enabling 29

T

transparency about 120 checking 44

policy-based router 124 switch supported 122

V

variable content 38 virtual IP failover about 146

configuring 26

W

WCCP checking 44

164Intel NetStructure Cache Appliance Administrator’s Guide

Image 176

Intel 1520 manual News server features

Contents

Intel NetStructure 1520 Cache Appliance Copyright 2000, Intel Corporation. All rights reserved Contents Configuring the Appliance Using the Command-Line Interface Troubleshooting Problems 109 Error Messages 151 Changing network address configuration on the NIC Contents 106 Preface Who should read this manual Conventions used in this manualConvention Purpose Bold Chapter Introduction What is an Intel NetStructure Cache Appliance? Why use this caching appliance?Flexible cache architecture Web proxy cache Intel NetStructure Cache Appliance features Secure, single-point administration Multithreading process supportHigh-speed caching Broad protocol support How to use this guide Snmp Network ManagementPerformance reporting To find out about … See …Page Getting Started Controls and physical features on your system Starting the system for the first time Command-line interface‚ on Hhmmss Getting Started Accessing the Manager UI Using Monitor and Configure mode Dashboard Monitor mode frame Configure mode frame Using online help Accessing the command-line interfaceChanging passwords Verifying that caching worksPage Monitoring Appliance Performance Accessing monitor pages Using the Dashboard Resolving alarms Dashboard alert lightsExposing node detail Alert light Condition Description Using the Node Changing the selected node Using the Graphs Using the ProtocolsUsing the Cache Using the ARM Using the Other Using the Mrtg Configuring the Appliance Accessing configure pages Using the Server Basics Option Description Setting general optionsNetStructure Cache section Setting Web management options Setting virtual IP addressing optionsUsing virtual IP addressing for node failover What are virtual IP addresses? Adding entries to the Virtual IP address list Configuring load-shedding Setting browser auto configuration optionsSetting throttling of network connections Enabling Snmp agents Configuring Http Option Definition Configuring Nntp Name and port see Option Definition Configuring FTP FTP Cache activation Storage Freshness For IMS If Modified Since revalidation requests Variable content Following table describes the variable conﬁguration options Link displays the Change Administrator’s Password Using the SecurityUsing the Routing Setting Http parent caching options Setting ICP options Establishing ICP peers Field Description Setting server accelerator options Option Description Checking Wccp Using the Host DatabaseChecking transparency Configuring the host database Another invalid hostname message to the user Configuring DNS Using the Snapshots Reaching the Snapshots Using the Command-Line Interface Starting the appliance the first time Starting the command-line interfaceUsing the appliance after initial start-up Navigating the command-line interface To do this Do this Using the setup menu Changing network addresses configuration Changing the gateway address Changing the controller speed and transmission modeChanging the DNS address and domain name Configuring time zone settings Configuring date and time settingsViewing current network address settings Using the main menu Stopping the appliance Checking the status of the Server and ManagerStarting the appliance Installing a new version of the appliance software Viewing and maintaining versions of the software Application upgrade Running a different version of the appliance software Patch upgradeOS/Application upgrade Clearing statistics Deleting a version of the appliance software Rebooting the System Halting the System Preparing a cache disk Resetting to factory settingsUsing the config menu Setting general controls Configuring protocol options Configuring Http options Configuring Nntp options Conﬁguring Nntp servers Following table describes the tags you can use in a rule Tag Description Tag Description Examples Conﬁguring Nntp access Following table lists the access directive options If access is Authenticator is User is Pass is Configuring Secure Socket Layer SSL port Configuring FTP options Setting filter rules Primary Destination Allowed Value Secondary Specifier Allowed Value Action Value Setting remap rules Target Configuring the cache Enabling caching for different protocols Setting disk storage options Setting object freshness options Following table shows the options Configuring caching rules Request URL method use one of the following Destip=112.12.12.12 scheme=ftp action=never-cache Configuring security options Controlling client access to the appliance Controlling access to the Manager UI Viewing and modifying ICP rules Configuring routing optionsConfiguring and maintaining ICP peers Following table describes each ﬁeld Example Mcttl Viewing current ICP settings Enabling and disabling ICP Enabling and disabling multicast in ICP Setting the ICP port numberSetting the ICP query timeout Controlling parent proxy caching Secondary Specifiers Allowed Value Action Tag Allowed Value Action Tag Allowed Value Configuring Wccp options Configuring the Adaptive Redirection Module ARM Enabling and disabling transparent redirection Configuring ARM bypass rules Rule Description Bypass rules have the following format Rule Format Configuring the host database options Configuring load-shedding options Option Description Configuring logging options Using the monitor menu Viewing Node statisticsStatistic Description Cache Progress Viewing Protocol statistics Statistic DescriptionNetwork Statistics Description Statistics Description Client Server Statistics Description Operations From this Node Statistics Description QueriesOriginating Viewing Cache statistics From ICP Peers Viewing Other statistics Statistic Description Using the expert menu Using the logoff menu Using the save menuUsing the load menu Troubleshooting Problems Rebooting your system Rebooting your system from the CLI Upgrading software Page Caching Solutions and Performance Appendix a Web proxy caching Day in the life of a cache request Ensuring cached object freshness Cache miss Revalidating objects Http object freshness testsExpires header test Last-Modiﬁed / Date header test Revalidate rules Default testDeciding whether to serve Http objects Configuring Http freshness options Configuring Http revalidation To cache or not to cache? Configuring Http cachabilityCaching Http alternates Transparent proxy caching Directive source Caching directives Serving requests transparently Interception strategies Using a layer 4-aware switch to filter transparency requests Using a WCCP-enabled router for transparency Using policy-based routing to filter transparency requests Using a router to ﬁlter Http requests ARM redirection More about bypass rules Adaptive interception bypassAppliance adaptive bypass Configuring bypass options Static and dynamic adaptive bypassSource bypass Destination bypass Server acceleration Retrieving requested documents Advantages of server accelerationHow server acceleration works Whereas the corresponding proxy request would look like this Web server redirects Understanding server acceleration mapping rules Examples of rules and translations User Request Translated Request User Request Origin Server Header Translated Header Understanding cache hierarchies Http cache hierarchies ICP cache hierarchies Miss Nntp cache hierarchies Bombay News article caching Supporting several parent news servers Appliance as a news serverAppliance as a caching proxy news server Blocking particular groups ClusteringSeveral news servers supplying the same groups Several servers supplying different groups Maintaining the cache updates and feeds TransparencyPosting Pull the overview information for speciﬁed groups Configuring Access control Pull the articles for speciﬁed groupsDynamically subscribe to speciﬁed groups Take a partial feed push for speciﬁed groups Self-tuning DataFlow core Obeying Nntp control messagesClient bandwidth throttling Carrier-class architecture Fine-grained parallelism Raw-disk object storeAlias-free caching Fast space reclamation Alarms Advanced protocol featuresHigh-availability Fast kernel packet engine Virtual IP failover Monitor Dashboard Load shedding Node fault toleranceExpansion capabilities Centralized administration Client ACL Page Error Messages Appendix B Html messages sent to clients Title Code Description Appendix B Error Messages 153 Standard Http response messages Message Description Appendix B Error Messages 155 Page Glossary DNS ISP POP Wccp Page Index News server features