DOCSLIB.ORG

Log & Event Manager

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Log & Event Manager Log & Event Manager Copyright © 1995-2012 SolarWinds Worldwide, LLC. All rights reserved worldwide. No part of this document may be reproduced by any means nor modified, decompiled, disassembled, published or distributed, in whole or in part, or translated to any electronic medium or other means without the written consent of SolarWinds. All right, title, and interest in and to the software and documentation are and shall remain the exclusive property of SolarWinds and its respective licensors. SOLARWINDS DISCLAIMS ALL WARRANTIES, CONDITIONS OR OTHER TERMS, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, ON SOFTWARE AND DOCUMENTATION FURNISHED HEREUNDER INCLUDING WITHOUT LIMITATION THE WARRANTIES OF DESIGN, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL SOLARWINDS, ITS SUPPLIERS, NOR ITS LICENSORS BE LIABLE FOR ANY DAMAGES, WHETHER ARISING IN TORT, CONTRACT OR ANY OTHER LEGAL THEORY EVEN IF SOLARWINDS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The SolarWinds, the SolarWinds & Design, ipMonitor, LANsurveyor, Orion, and other SolarWinds marks, identified on the SolarWinds website, as updated from SolarWinds from time to time and incorporated herein, are registered with the U.S. Patent and Trademark Office and may be registered or pending registration in other countries. All other SolarWinds trademarks may be common law marks or registered or pending registration in the United States or in other countries. All other trademarks or registered trademarks contained and/or mentioned herein are used for identification purposes only and may be trademarks or registered trademarks of their respective companies. Microsoft®, Windows®, and SQL Server® are registered trademarks of Microsoft Corporation in the United States and/or other countries. LEM User Guide Chapter 1: Introduction 1 Chapter 2: Installing and Configuring 3 Requirements 3 LEM Port and Firewall Information 4 Preparing the Installation Files 5 Installing the Virtual Appliance 6 Installing the LEM Reports 7 Connecting to the Web Console 7 Installing the LEM Desktop Console Software 8 Installing the Agent 9 Configuring Non-Agent Devices 11 Configuring Manager Tools 13 Chapter 3: Useful Tasks with LEM 17 Tour Log & Event Manager 17 Ops Center 17 Monitor 18 Explore 19 Build 20 Rules – Additional Details 20 Manage 20 Analyze 21 Additional Information 22 Adding Devices 22 Which Do I Pick? 22 Agent Installation 23 Configuring Non-Agent Devices 24 Configuring Connectors for Agent and Non-Agent Devices 24 i LEM User Guide Troubleshooting 25 Additional Information 26 Verifying Data 27 Which Do I Pick? 27 nDepth: A Fully Integrated IT Search Solution 28 LEM Reports: For Compliance and Historical Reporting Needs 29 Troubleshooting 30 Additional Information – nDepth 31 External resources: 31 Additional Information – LEM Reports 31 Adding Filters 32 Which Do I Pick? 32 Use the Default Filters as Examples 33 Other Filter Scenarios 33 Example: Change Management 34 Troubleshooting 34 Additional Information 35 Adding Rules 36 Use Pre-configured Rules to Get Started 36 Example: Change Management 37 Other Rule Scenarios 39 Troubleshooting 39 Additional Information 40 Analyzing Data 41 Analyze Data 41 Which Do I Pick? 41 nDepth: A Fully Integrated IT Search Solution 42 LEM Reports: For Compliance and Historical Reporting Needs 43 Troubleshooting 44 ii Table of Contents Additional Information – nDepth 45 Additional Information – LEM Reports 45 Chapter 4: Leveraging LEM 47 Monitoring Windows Domain Controllers for Brute Force Hacking Attempts 47 Configuring the SolarWinds LEM Agent 48 Monitoring Firewalls for Port Scans and Malformed Packets 55 Monitoring Antivirus Software for Viruses that are Not Cleaned 59 Setting Antivirus Software to Log to a LEM Appliance 60 Configuring the Antivirus Tool on a LEM Manager 60 Creating a LEM Rule to Track When Viruses Are Not Cleaned 61 Monitoring Proxy Servers for Suspicious URL Access 62 Monitoring Microsoft SQL Databases for Changes to Tables and Schema 65 Leveraging the Incidents Report in Security Audits 68 Chapter 5: Introduction to the Console 70 Starting the LEM Consoles 70 Opening Views in the Console 71 Working with Grids 72 Rearranging Grid Columns 72 Sorting a Grid by its Columns 72 Logging In and Out of Managers 73 Logging Into a Manager 74 Logging Out of a Manager 74 iii LEM User Guide Exiting the LEM Console 74 Chapter 6: Ops Center 75 Ops Center Features 76 Widgets 77 Widget Manager 77 Using the Widget Builder 79 Viewing Specific Widget Data 84 Refreshing a Widget’s Data 85 Opening a Filter From a Widget 85 Editing a Widget’s Chart Presentation 87 Resizing a Widget 88 Viewing a Widget’s Legend 88 Widget Storage 89 Chapter 7: Monitor 90 Monitor View Features 90 Filters and Filter Groups 92 Standard LEM Filters 93 Filter Creation 96 Features of Filter Creation 97 Alerts 98 Applying a Filter to the Alert Grid 98 Sorting the Alert Grid 99 Highlighting Alerts 99 Copying Alert Data to the Clipboard 101 Marking Alerts as Read and Unread 102 Removing Alerts 103 iv Table of Contents Using the Alert Details/Alert Description Pane 103 Alert Severity Levels 105 Chapter 8: Explore 107 nDepth 107 nDepth's visual tools 108 nDepth's Primary Uses 108 Exploring Alerts vs. Log Messages 109 Opening nDepth 109 Opening nDepth From Another Data Source 110 nDepth key features 110 nDepth's Search Bar 112 nDepth Explorer Toolbar 114 nDepth's History Pane 116 Using the nDepth Histogram 117 Histogram Features 117 Searching the Activity Associated with a Particular Histogram Bar 119 Moving the Search Period 119 Changing the Period's Start and End Time 120 Using Result Details 121 Interpreting Search Results in Alerts Mode 122 Interpreting Search Results in Log Messages Mode 122 Adding Search Strings from Result Details 124 Using Explorers with Result Details 125 Responding to Result Details 126 Exporting Result Details Data to a Spreadsheet 127 Common nDepth Data Fields 127 Common Data Fields Categories in Alerts Mode 127 Common Data Field Categories in Log Messages Mode 128 v LEM User Guide Using the Word Cloud 129 Opening the Word Cloud 130 Viewing Statistics in the Word Cloud 130 Filtering the contents of the Word Cloud 130 Exploring Items in the Word Cloud 131 Using the Tree Map 132 Opening the Tree Map 133 Resizing Tree Map Categories 133 Exploring items in the Tree Map 133 Using nDepth widgets 134 Default nDepth chart widgets 134 nDepth explorer and widget icons 135 Viewing a widget's details 136 Creating a search string from a widget item 136 Adding new nDepth Widgets 137 Editing nDepth idgets 138 Adding a chart widget to the nDepth Dashboard 138 Adding a main nDepth view to the nDepth Dashboard 139 Using Search Builder 139 Opening Search Builder 141 Switching from the search bar to Search Builder 141 Search Builder features 142 Configuring a Search with Search Builder 145 Utilities 147 Explorer Types 147 NSLookup Explorer 149 Traceroute Explorer 150 Whois Explorer 151 Manually Exploring an Item 151 vi Table of Contents Chapter 9: Build 153 Groups 153 Group types 153 Groups View Features 155 Refining the Groups Grid 156 Rules 157 Rules View Features 157 Rules Grid Columns 157 Refine Results Form 159 Users 160 Users View Features 160 Users Grid Columns 161 Refining the Users Grid 161 Viewing a User’s System Privileges 162 Chapter 10: Manage 164 Appliances View Features 164 Appliances Grid Columns 165 Details Pane 167 Configuring Alert Distribution Policy 168 Practical Uses for Alert Distribution Policy 168 Opening the Alert Distribution Policy Window 169 About the Alert Distribution Policy Window 170 Configuring Alert Distribution Policy 172 Pushing alert policy to lower-level alert types 173 Exporting a Manager’s Alert Policy 174 Nodes 175 Nodes View Features 175 Nodes Grid Columns 177 vii LEM User Guide Refining the Agents Grid 179 Chapter 11: Access Controls 181 Adding New Users 181 Editing User Settings 186 Deleting Users 187 Restrict and Unrestrict LEM Reports 187 Chapter 12: Utilizing the Console 189 Filters 189 Creating Filters for Real-time Monitoring 189 Features of the List Pane 191 Features of the Conditions Box 195 199 Creating a New Filter 199 Editing an existing filter 200 Cloning an Existing Filter 200 Pausing Filters 202 Resuming Paused Filters 203 Turning Filters On and Off 204 Copying a Filter 204 Importing a Filter 205 Exporting a Filter 206 Deleting a Filter 206 Managing Filter Groups 207 Adding a New Filter Group 207 Renaming a Filter Group 208 Rearranging Filter Groups 208 Moving a Filter From One Group to Another 208 viii Table of Contents Deleting a Filter Group 209 Responding to Alerts 210 Using the Respond Form’s Drag and Drop Functionality 211 Event Explorer 213 Opening the Event Explorer 213 Event Explorer Features 214 Exploring Alerts 215 Using the Event Map 216 Reading an Event Map 216 Event Map Legend 217 Using the Event Grid 218 Viewing information in the event grid 218 Exploring From the Event Grid 219 Using the Alert Details Pane 219 Opening and Closing the Alert Details Pane 220 Viewing an Event’s Alert Details 220 Exploring From the Alert Details Pane 221 Performing nDepth Searches 222 Creating Search Conditions 224 Deleting Items From Search Strings 225 Creating Custom Timeframes 226 Saving a Search 227 Using a Saved Search 228 Making Changes to a Saved Search 228 Exporting nDepth Search Results to PDF 229 Exploring Search Results from Graphical Views 230 Taking Action on Alert Details 231 Deleting a Saved Search 231 Creating Search Conditions 232 ix LEM User Guide Deleting
Load more

Recommended publications
  • Protokollsupport
    Reference Guide WinRoute Pro 4.1 SE För version 4.1 Build 22 och sinare Tiny Software Inc. Contents Innehållsförteckning Läs mig först 2 Beskrivning av WinRoute 5 WinRoute sammanfattning...................................................................................... 6 Omfattande protokollsupport .................................................................................. 9 NAT-router............................................................................................................ 10 Introduktion i NAT .................................................................................... 11 Hur NAT fungerar...................................................................................... 12 WinRoutes struktur .................................................................................... 13 Att ställa in NAT på båda gränssnitten ...................................................... 15 Portmappning - paketbefordran ................................................................. 18 Portmappning för system med flera hem (flera IP-adresser)...................... 21 Multi-NAT ................................................................................................. 22 Gränssnittstabell......................................................................................... 24 VPN-support .............................................................................................. 24 Brandvägg med paketfilter.................................................................................... 25 Översikt
    [Show full text]
  • J I Truste Ne Ork
    Internet Security A Jumpstart for Systems Administrators and IT Managers Tim Speed Juanita Ellis Digital Press An imprint of Elsevier Science Amsterdam, Boston • London • New York o Oxford • Paris • San Diego San Francisco • Singapore • Sydney • Tokyo Digital Press is an imprint of Elsevier Science. Copyright © 2003, Elsevier Science (USA). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Recognizing the importance of preserving what has been written, Elsevier Science prints its books on acid-free paper whenever possible. Library of Congress Cataloging-in-Publication Data ISBN 1-55558-298-2 British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. The publisher offers special discounts on bulk orders of this book. For information, please contact: Manager of Special Sales Elsevier Science 200 Wheeler Road Burlington, MA 01803 Tel: 781-313-4700 Fax: 781-313-4882 For information on all Digital Press publications available, contact our World Wide Web home page at: http://www.digitalpress.com or http://www.bh.com/digitalpress 1098765432 1 Printed in the United States of America To Linda Speed~my split apart. -T.S. To my dad, Charles Ellis. -J.E. This Page Intentionally Left Blank Contents Foreword ix Acknowledgments xi Introduction xiii The Internet and Security I. I The
    [Show full text]
  • Novell Bordermanager 3.9 Installation Guide Novdocx (ENU) 29 January 2007
    Novell BorderManager 3.9 Installation Guide novdocx (ENU) 29 January 2007 January 29 (ENU) novdocx Novell BorderManager 3.9 www.novell.com INSTALLATION GUIDE April 05, 2007 novdocx (ENU) 29 January 2007 January 29 (ENU) novdocx Legal Notices Novell, Inc. makes no representations or warranties with respect to the contents or use of this documentation, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to revise this publication and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. Further, Novell, Inc. makes no representations or warranties with respect to any software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to make changes to any and all parts of Novell software, at any time, without any obligation to notify any person or entity of such changes. Any products or technical information provided under this Agreement may be subject to U.S. export controls and the trade laws of other countries. You agree to comply with all export control regulations and to obtain any required licenses or classification to export, re-export or import deliverables. You agree not to export or re-export to entities on the current U.S. export exclusion lists or to any embargoed or terrorist countries as specified in the U.S. export laws. You agree to not use deliverables for prohibited nuclear, missile, or chemical biological weaponry end uses.
    [Show full text]
  • Novell Zenworks 6.5 Desktop Management Installation Guide May 19, 2006
    Novell Confidential Manual (ENU) 21 December 2004 Novell ZENworks® Desktop Management 6.5 www.novell.com INSTALLATION GUIDE May 19, 2006 Novell Confidential Manual (ENU) 21 December 2004 Legal Notices Novell, Inc. makes no representations or warranties with respect to the contents or use of this documentation, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to revise this publication and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. Further, Novell, Inc. makes no representations or warranties with respect to any software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to make changes to any and all parts of Novell software, at any time, without any obligation to notify any person or entity of such changes. Any products or technical information provided under this Agreement may be subject to U.S. export controls and the trade laws of other countries. You agree to comply with all export control regulations and to obtain any required licenses or classification to export, re-export, or import deliverables. You agree not to export or re-export to entities on the current U.S. export exclusion lists or to any embargoed or terrorist countries as specified in the U.S. export laws. You agree to not use deliverables for prohibited nuclear, missile, or chemical biological weaponry end uses. Please refer to www.novell.com/info/exports/ for more information on exporting Novell software.
    [Show full text]
  • Hacking for Dummies.Pdf
    01 55784X FM.qxd 3/29/04 4:16 PM Page i Hacking FOR DUMmIES‰ by Kevin Beaver Foreword by Stuart McClure 01 55784X FM.qxd 3/29/04 4:16 PM Page v 01 55784X FM.qxd 3/29/04 4:16 PM Page i Hacking FOR DUMmIES‰ by Kevin Beaver Foreword by Stuart McClure 01 55784X FM.qxd 3/29/04 4:16 PM Page ii Hacking For Dummies® Published by Wiley Publishing, Inc. 111 River Street Hoboken, NJ 07030-5774 Copyright © 2004 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permis- sion of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4447, e-mail: permcoordinator@ wiley.com. Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc.
    [Show full text]
  • (12) United States Patent (10) Patent No.: US 8,943,201 B2 Larson Et Al
    USOO8943 201B2 (12) United States Patent (10) Patent No.: US 8,943,201 B2 Larson et al. (45) Date of Patent: Jan. 27, 2015 (54) METHOD FORESTABLISHING ENCRYPTED (58) Field of Classification Search CHANNEL USPC .......................................... 709/225 229, 245 See application file for complete search history. (75) Inventors: Victor Larson, Fairfax, VA (US); Robert Dunham Short, Leesburg, VA (56) References Cited (US); Edmund Colby Munger, Crownsville, MD (US); Michael U.S. PATENT DOCUMENTS Williamson, South Riding, VA (US) 2,895,502 A 7/1959 Roper et al. 4.405,829 A 9, 1983 RiveSt (73) Assignee: VirnetX, Inc., Zephyr Cove, NV (US) (Continued) (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 FOREIGN PATENT DOCUMENTS U.S.C. 154(b) by 0 days. DE 1992.4575 12/1999 EP O838.930 4f1988 (21) Appl. No.: 13/285,962 (Continued) (22) Filed: Oct. 31, 2011 OTHER PUBLICATIONS (65) Prior Publication Data Exhibit G, Opening Expert Report of Dr. Stuart Stubblebine Regard ing Invalidity of the 135,211, and 504 Patents. US 2012/OO4208.6 A1 Feb. 16, 2012 (Continued) Related U.S. Application Data Primary Examiner — Krisna Lim (60) Continuation of application No. 1 1/679,416, filed on (74) Attorney, Agent, or Firm — McDermott, Will & Emery Feb. 27, 2007, now Pat. No. 8,051,181, which is a continuation of application No. 10/702,486, filed on (57) ABSTRACT Nov. 7, 2003, now Pat. No. 7,188,180, which is a A technique is disclosed for establishing a secure communi cation link between a first computer and a second computer (Continued) over a computer network.
    [Show full text]
  • Supported Log File Formats
    Supported Log File Formats Vendor/Product Log Format Analyzer Analyzer Vantage & Live Standard Premium & Vantage Giga Analyzer Giga 3Com 3Com Firewall Yes Yes Yes Yes 8e6 R2000 Yes Yes Yes Yes 8e6 R3000 Yes Yes Yes Yes Aladin Esafe Blocked Logs Yes Yes No Yes Allied Telesyn ATI Level 3 No No Yes No Switch Model 9812 Apache HTTP Server - Yes Yes Yes Yes Access Log Applied Data Control Native Log Yes Yes No Yes Arkoon SMTP No Yes Yes Yes Arkoon Web (WELF) Yes Yes Yes Yes Arkoon Arkoon Yes *New Yes *New No Yes *New Firewall Astaro Native Syslog Yes Yes Yes Yes 3 Avirt Proxy Native Log Yes Yes Yes Yes AVM AVM Ken! Yes *New Yes *New No Yes *New Barracuda Networks Spam Firewall No No Yes *New No (CSV Format) Barracuda Networks Spam Firewall No No Yes *New No (Syslog Format) Bintec VPN Bintec VPN 25 No No Yes No Bloxx Proxy Server W3C Log No No Yes *New No Bluecoat Proxy SG Yes Yes Yes Yes Common Log Bluecoat Proxy SG Yes Yes Yes Yes Squid Native Log Bluecoat Proxy SG W3C Yes Yes Yes Yes Log Bluecoat Instant No No Yes *New No Messaging Log W3C Bluecoat Websense Yes Yes No Yes BlueReef Virtual Server SQUID Native Yes Yes Yes Yes Log Borderware Firewall Yes Yes Yes *New Yes Borderware Direct Packet No No Yes *New No Borderware Mail Yes Yes Yes *New Yes BT Proxy Native Log Yes Yes No Yes CacheFlow Proxy Squid Log Yes Yes No Yes CacheXpress Squid Log Yes Yes Yes Yes CC Proxy Native Log Yes 1 Yes Yes Yes Checkpoint Firewall-1 Yes 1 *Mod Yes *Mod Yes No Checkpoint Firewall Yes 1 *Mod Yes *Mod Yes No Custom Checkpoint NG Yes 1 *Mod Yes *Mod Yes No CipherTrust
    [Show full text]
  • Novell Bordermanager 3.9 Administration Guide Novdocx (ENU) 29 January 2007
    Novell BorderManager 3.9 Administration Guide novdocx (ENU) 29 January 2007 January 29 (ENU) novdocx Novell BorderManager 3.9 www.novell.com ADMINISTRATION GUIDE April 5, 2007 novdocx (ENU) 29 January 2007 January 29 (ENU) novdocx Legal Notices Novell, Inc. makes no representations or warranties with respect to the contents or use of this documentation, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to revise this publication and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. Further, Novell, Inc. makes no representations or warranties with respect to any software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to make changes to any and all parts of Novell software, at any time, without any obligation to notify any person or entity of such changes. Any products or technical information provided under this Agreement may be subject to U.S. export controls and the trade laws of other countries. You agree to comply with all export control regulations and to obtain any required licenses or classification to export, re-export or import deliverables. You agree not to export or re-export to entities on the current U.S. export exclusion lists or to any embargoed or terrorist countries as specified in the U.S. export laws. You agree to not use deliverables for prohibited nuclear, missile, or chemical biological weaponry end uses.
    [Show full text]
  • Novells Guide to Bordermanager Pdf, Epub, Ebook
    NOVELLS GUIDE TO BORDERMANAGER PDF, EPUB, EBOOK J.D. Marymee, Sandy Stevens | 384 pages | 01 Jan 1998 | John Wiley & Sons Inc | 9780764545405 | English | Foster City, United States pdfFiller. On-line PDF form Filler, Editor, Type on PDF, Fill, Print, Email, Fax and Export All of the information presented in this book has been gathered from hands-on, real world experiences of the authors. A best-seller that once showed you how to reign in a panther can now show you …. Today, software engineers need to know not only how to program effectively but also how to …. You Will Learn Python 3! Zed Shaw has perfected the world's best system for learning Python …. If you think you should have access to this content, click the button to contact our support team. Contact us. To read the full version of this content please select one of the options below. You may be able to access this content by logging in via Shibboleth, Open Athens or with your Emerald account. To rent this content from Deepdyve, please click the button. Rent from Deepdyve. Join us on our journey Platform update page Visit emeraldpublishing. This retrieval method along with NetWare's fast file IO and other proprietary code made BorderManager's proxy engine one of the fastest in existence. This makes it possible for the customer to choose which NetWare or Linux kernel the services will run on. At this time Novell all but announced the end of development for the NetWare kernel numerous public and private statements that there is no bit future for NetWare and that Linux is the path to bit computing for OES.
    [Show full text]
  • Novell Zenworks Desktop Management? 17 Automatisches Importieren Und Entfernen Von Arbeitsstationen
    Novell Confidential Manual (DEU) 6 October 2004 Novell ZENworks® Desktop Management 6.5 www.novell.com INSTALLATIONSHANDBUCH 11.02.05 Novell Confidential Manual (DEU) 6 October 2004 Rechtliche Belange Novell, Inc., leistet keinerlei Gewähr bezüglich des Inhalts oder Gebrauchs dieses Handbuchs. Insbesondere werden keine ausdrücklichen oder stillschweigenden Gewährleistungen hinsichtlich der handelsüblichen Qualität oder Eignung für einen bestimmten Zweck übernommen. Novell, Inc. behält sich weiterhin das Recht vor, diese Dokumentation zu revidieren sowie ihren Inhalt jederzeit und ohne vorherige Ankündigung zu ändern. Novell, Inc. gibt ebenfalls keine Erklärungen oder Garantien in Bezug auf Softwareprodukte und schließt insbesondere jegliche ausdrückliche oder stillschweigende Garantie auf Marktgängigkeit oder Eignung für einen bestimmten Zweck aus. Außerdem behält sich Novell, Inc. das Recht vor, Novell-Software jederzeit ganz oder teilweise zu ändern, ohne dass für Novell, Inc. die Verpflichtung entsteht, Personen oder Organisationen von diesen Änderungen in Kenntnis zu setzen. Die Ausfuhr bzw. die Wiederausfuhr dieses Produkts ist nur im Rahmen gültiger Gesetze bzw. Richtlinien, darunter die US-Exportbestimmungen bzw. Gesetze Ihres Heimatlands, gestattet. Copyright © 2005 Novell, Inc. Alle Rechte vorbehalten. Ohne ausdrückliche schriftliche Genehmigung des Herausgebers darf kein Teil dieser Veröffentlichung reproduziert, fotokopiert, übertragen oder in einem Speichersystem verarbeitet werden. Novell, Inc., besitzt die Rechte auf geistiges Eigentum für die Technologie, die in dem in dieser Dokumentation beschriebenen Produkt enthalten ist. Diese Rechte auf geistiges Eigentum umfassen möglicherweise insbesondere ein oder mehrere Patente in den USA, die unter http://www.novell.com/ company/legal/patents aufgeführt sind (ohne darauf beschränkt zu sein). Diese Rechte umfassen möglicherweise außerdem ein oder mehrere andere Patente oder laufende Patentanträge in den USA und in anderen Ländern.
    [Show full text]
  • Appendix a Practical Technical Implementation
    Optimising Internet Bandwidth in Developing Country Higher Education Appendix A Practical technical implementation 1. Web caching A Web proxy server is a server on the local network that keeps copies of recently retrieved or often used Web pages, or parts of pages. When the next person retrieves these pages, they are served from the local proxy server instead of from the Internet. This results in faster Web access in most cases. Bandwidth usage can also be reduced. When a proxy server is implemented, the administrator should also be aware that some pages are not cacheable – for example, pages that are the output of server-side scripts. Loading of Web pages is also affected. Where previously the page would begin to load slowly, first showing some text and then displaying the graphics one by one, in a network with a proxy server, there could be a delay when nothing seems to happen, and then the page will load almost at once. The time it takes to load the whole page might take 10 seconds, whereas without a proxy server it may take 30 seconds, but unless this is explained to some impatient users, they may say the proxy server has made things slower. It is usually the task of the network administrator to deal with user perception like these. 1.1 Proxy server products Squid. Open source Squid is the de facto standard at universities. It is free, reliable, easy to use and can be enhanced with for example content filtering and advertisement blocking. Squid produces logs that can be analysed using software such as Sawmill (commercial) or Awstats, Webalizer (Open Source), both of which produce good graphical reports.
    [Show full text]
  • Proxy Server
    From Wikipedia, the free encyclopedia Proxy server Proxy server Types and functions Proxy servers implement one or more of the following functions: Caching proxy server A caching proxy server accelerates service Schematic representation of a proxy server, requests by retrieving content saved from a where the computer in the middle acts as the previous request made by the same client or proxy server between the other two. even other clients. Caching proxies keep loc- al copies of frequently requested resources, In computer networks, a proxy server is a allowing large organizations to significantly server (a computer system or an application reduce their upstream bandwidth usage and program) that acts as a go-between for re- cost, while significantly increasing perform- quests from clients seeking resources from ance. Most ISPs and large businesses have a other servers. A client connects to the proxy caching proxy. These machines are built to server, requesting some service, such as a deliver superb file system performance (often file, connection, web page, or other resource, with RAID and journaling) and also contain available from a different server. The proxy hot-rodded versions of TCP. Caching proxies server evaluates the request according to its were the first kind of proxy server. filtering rules. For example, it may filter The HTTP 1.0 and later protocols contain traffic by IP address or protocol. If the re- many types of headers for declaring static quest is validated by the filter, the proxy (cacheable) content and verifying content provides the resource by connecting to the freshness with an original server, e.g.
    [Show full text]