System Time | 3Com Webcache 3000 (3C16116), Webcache 1000 (3C16115)

	The Device View		61
	The Help View	63
	The Navigation Tree		64
	The Information Area		65
5
5	SYSTEM TIME
	Configuring the System Time			67
	What is the Network Time Protocol?				68
	Choosing a Network Time Protocol Server 68
	Configuring the System Time Using the Network Time Protocol 69
	Configuring the System Time Manually				69
	System Time and Performance Graphs				69
6
6	SECURITY
	What are Passwords?		71
	Setting Passwords	71
	What is Password Recovery?			72
	Enabling/Disabling Password Recovery				72
	Performing Password Recovery			73

7CONTROLLING AND M ONITORING W EB A CCESS

	What is Web Site Blocking?	75
	Configuring Web Site Blocking		76
	Customizing the Response	76
	What is Web Client Blocking? 77
	Configuring Web Client Blocking		78
	What is Access Logging?	79
	Configuring Access Logging	80
	Viewing the Access Log 81
	Analyzing the Access Logs	81

8 SYSTEM EVENTS
	What are System Events?	83
	Email Notification 83
	Configuring Email Notification		83

Image 5

3Com Webcache 3000 (3C16116), Webcache 1000 (3C16115) manual System Time

Contents

SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents II Webcache Features System Time Performance Monitoring III Command Line Interface Problem Solving Returning Products for Repair Page About this Guide Convention Description ConventionsIcon Description Documentation RelatedComments Pddtechpubscomments@3com.com Site ProductRegistration Getting Started Page Webcache? What isReduced Network Traffic Reduced Web Latency Webcache Controlled Web Access3Com Network Supervisor Link Status LEDs View DetailColor Indicates Cache Storage Status LEDs LED Color Indicates Activity LED Power/Self test LED LEDs Duplex Mode Feature Webcache 1000/3000 Port SpeedDNS Server Default Router Caching Mode NTP Network Time Protocol Disabled Introducing the Webcache Installing the Webcache Site Package ContentsChoosing a Suitable Webcachemounts Rack-Mounting Kit Contents Fitting a Rack-Mounting Bracket to the Webcache Fitting a Rack-Mounting Rail to the Rear of the Rack Fitting a Rack-Mounting Rail to the Front of the Rack Repeat and for the other side of the rack Powering-up Power-upSequence Webcache Color State Problem Proxy Cache Deploying Webcache in Your Network Transparent Cache Transparent Cache Deployment Key As a Proxy Forwarder below Setting Up the Webcache for Management Example Setting Up Using a Cross-over Cable Setting Up Over the Test Network Is the default IP address of the Webcache Accessing the Web Interface User name and password screen To connect to the Webcache via the console port Setting Up Through the Console Port Accessing the Command Line Interface Setting Meaning Default Example Wizard SettingsGetting Started Completing the Getting Started wizard before you introduce Webcache to ConnectingLive Network Cables Concepts ConfigurationIP Addresses Obtaining a Registered IP Address Installing the Webcache Host Name Domain Name You cannot enter a host name containing a space character Explicitly direct its Web requests to the Webcache Click LAN Settings Tick Use a proxy serverManual File Scripts Select Manual Proxy ConfigurationProxy Auto Http//intranet Select Automatic Proxy Configuration Click LAN Settings Tick Use automatic configuration script Web Proxy Without delays caused by WpadAuto-Discovery Web Proxy Auto-Discovery Wpad protocol is not supported by Auto-Discovery Web ProxyResources Third-party Tools Software Upgrade and Installation System DiagnosticsChapter Managing the Webcache System Time Security Chapter System Events Performance MonitoringPage Software Interfaces Management Admin user name is case-sensitive Default UserLogging in as a Interface Accessing the Web Interface Banner Understanding the The Web Interface Summary View ToolbarDevice View Help View Console Port Hotspot Device MimicLAN Port Hotspot Unit Hotspot Device Summary SymbolBehavior Area Information Managing the Webcache System Time Protocol? Network TimeChoosing a Protocol Server Protocol ConfiguringSystem Time Manually System Time Setting Passwords Passwords?What are Username as soon as possible Access to the management interfaces Account no passwordEnabled on the Webcache Security of the Webcache. When password recovery is enabled Performing Password RecoveryPassword for the admin username Security WEB Access Example Domain Name Rules Check Enable Web Site BlockingSite Blocking What is Web Client Blocking? Log in to the Web interface Click Device View on the Toolbar Client Blocking Access log to the FTP server See Proxy Auto Configuration PAC File Scripts onAccess logs contain the following fields Bypass the Webcache entirely after reading the Browser Field Description Logging Analyzing Access LogsLog Controlling and Monitoring WEB Access Notification System Events New software upgrade is available Check Enable Email Notifcation of System EventsSoftware upgrade has succeeded Software upgrade has failed Webcache has failed its Power On Self Test Snmp Traps It. You can configure the network management station to logCache storage device has failed Click OK System events occur. An Snmp trap is a message generated by Traps Caching Monitoring? Request Rate sec-1 Bandwidth Saving %Hit and Miss Rate % Hit and Miss Latencies msec SystemThroughput Kbits/sec CPU Load % Network Packets sec Disk Activity secNew TCP Connection sec DNS Lookups sec What are System Diagnostics?Pinging Other Devices Addresses Tracing IPPerforming a Trace Route System Log Administrator and 3Com support personnel to troubleshootThat worked are displayed System Log is primarily intended to be used by your System Special.asp Log System Diagnostics Installation For more information about Snmp Traps, see Snmp Traps on Upgrades Performing an Automatically Detected Software Upgrade Performing a Software Upgrade Upgrade Now View Upgrade Version Release NotesUpgrade Later Discard Upgrade Performing a Manual Software Upgrade Installation? What is a SoftwareInstallation Performing a Configure the settings of the replacement Webcache ConfigurationsSaving Restoring Example Restoring a Matching configuration file to restore the settingsInterface Web interface Click Restore. The restore process begins III Command Line Interface 108 Accessing Command Line Interface Command Line Console port Accessing Command Line Interface Logout command GettingStarted commandProtocol menu Security menu To enter multiple commands To enter a simple commandTo enter commands that require values To enter abbreviated commands Quick Guide to Commands Following prompt is displayed Basic setup information for the WebcacheEnter a valid IP address Following prompt is displayed Enter a valid subnet mask Following prompt is displayed Enter a valid domain name Following prompt is displayed Enter the new password for the admin userEnter a valid date Following prompt is displayed Enter a valid time Exiting Command on the Top-level menuDisplaying Changing IP-related Information Automatically log you out Enter a valid domain name Specify an IP address to be tracedEnter a valid gateway IP address Enter a valid Domain Name System DNS Server IP address Resetting IP Information to Factory Default SettingsEnter yes to reset the IP address for the Webcache To display the IP information, at the Top-level menu, enter Information Password Changing the AdminNo password Displaying Following example prompt is displayed Displaying Changing Webcache Information Functions What Happens During an Initialization? What Happens During a Reboot? To specify the name At the Top-level menu, enter Specifying aManagement menu To set the community string At the Top-level menu, enter Enter a community string for the admin user nameFollowing read-only fields are displayed System Name Contact Time Since ResetSoftware Version Hardware Version Problem Solving 128 Accessing the Webcache via the Console Line Interface Problems Accessing the Webcache via TelnetYou cannot access the Webcache using Telnet Solving Web You cannot access the Web interface System Time does not update in the Web interface Line Interface Solving CommandProblems Solving Webcache The performance of the Webcache is poor PerformanceCheck ProblemsNo Web sites can be accessed using the Webcache Solving Webcache Performance Problems Problem Solving Appendices and Index 138 Safety Information Power Cord Set Important SafetyThis must be approved for the country where it is used Personnel only France and Peru only Only Cordon électrique Consignes importantes de sécuritéIl doit être agréé dans le pays dutilisation Calibre 18 AWG Type SV ou 5J Conducteurs Consignes importantes de sécurité Netzstecker Wichtige Sicherheitsinformat ionenDas Gerät muß geerdet sein Bezeichnung Neutral tragen †Impédance à la terre Appendix a Safety Information Category PIN -OUTS Null-Modem Cable Pin-outsPin to RS-232 25-pin PC-AT Serial Cable Modem Cable 9-pin to RS-232 25-pin Pin Number Signal Function Appendix B Cable Specifications and PIN-OUTS Safety Physical DimensionsPower Supply Environmental Requirements Terminal Emulation Protocols Used for AdministrationStandards Supported Online Technical Services Hostname ftp.3com.com Europe and South Africa Asia, Pacific Rim Country Telephone Number Fax Number Returning Products for Repair Appendix D Technical Support Glossary Fast Ethernet EthernetFull duplex Gateway Latency LAN portLine speed Protocol Glossary Glossary Glossary Index Index LAN Snmp Index Index 3COM END User Software License Agreement GNU General Public License Version 2, June Page No Warranty Page Regulatory Notices