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Helix Universal Proxy-Mobile Administration Guide HELIX PROXY ADMINISTRATION GUIDE
Helix Proxy Version 12.0
Revision Date: 28 March 2008 RealNetworks, Inc.
PO Box 91123
Seattle, WA 98111-9223
U.S.A.
http://www.real.com
http://www.realnetworks.com
©2003-2008 RealNetworks, Inc. All rights reserved.
Information in this document is subject to change without notice. No part of this document may be reproduced
or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express
written permission of RealNetworks, Inc.
Printed in the United States of America.
Helix, the Helix Logo, Real, the Real "bubble" (logo), RealJukebox, RealOne, Real-rTV, RealArcade, RealAudio,
RealDownload, RealNetworks, RealPix, RealPlayer, RealPresenter, RealProducer, RealProducer Plus,
RealPoducer Pro, RealProxy, RealPublisher, RealSites, RealSystem, RealText, RealVideo, Rhapsody, ra/ve,
SureStream, The Future is Real, TurboPlay, and Xing are trademarks or registered trademarks of RealNetworks,
Inc.
Other product and corporate names may be trademarks or registered trademarks of their respective companies. SUMMARY OF CONTENTS
iii
INTRODUCTION
..................................................................................................................... 1
PAR T I: PROXY BASICS
1
NEW FEATURES
........................................................................................................... 9
2
OVERVIEW
................................................................................................................. 13
PAR T II: CONF IGURATION
3
INSTALLATION AND TESTING
................................................................................... 29
4
PROXY SETUP
............................................................................................................. 43
5
RATE CONTROL
........................................................................................................ 61
6
PROXY ROUTING
....................................................................................................... 97
7
MULTICASTS
............................................................................................................ 103
8
MEDIA PLAYER CONFIGURATION
........................................................................... 111
PAR T III: SECURITY
9
FIREWALLS
............................................................................................................... 119
10
ACCESS CONTROL
.................................................................................................. 133
11
AUTHENTICATION
.................................................................................................. 139
PAR T IV: MONITORING
12
BASIC LOGGING
...................................................................................................... 155
13
ADVANCED LOGGING
............................................................................................. 183
14
PROXY MONITOR
.................................................................................................... 199
15
SNMP
....................................................................................................................... 203
PAR T V: APPENDIXES
A
CONFIGURATION FILE
............................................................................................ 219
B
ADDRESS SPACE BIT MASKS
.................................................................................... 223
C
AUTHENTICATION DATA STORAGE
........................................................................ 229
GLOSSARY
........................................................................................................................... 235
INDEX
................................................................................................................................. 245 iv
Helix Proxy Administration Guide CONTENTS
v
INTRODUCTION
1
What is Helix? .................................................................................................. 1
Audience for this Guide .................................................................................... 1
How This Guide Is Organized ............................................................................ 1
Conventions Used in This Manual ..................................................................... 3
Terminology................................................................................................. 4
Typographical Conventions........................................................................... 4
Sample Links................................................................................................ 4
Default Locations and Values........................................................................ 5
Additional RealNetworks Resources .................................................................. 5
PAR T I: PROXY BASICS
1
NEW FEATURES
9
New Features in Helix Proxy Version 12 .............................................................. 9
Enhanced Rate Control................................................................................. 9
Removed Features in Helix Proxy Version 12.0 .................................................... 9
Progressive Networks Audio (PNA)................................................................ 9
Support for MPEG-1 and Vivo Video Formats ...............................................10
Upgrade Issues ................................................................................................10
Compatibility with Earlier Versions ...............................................................10
Rate Control Configuration Changes............................................................10
ProcessorCount Variable Obsolete ...............................................................10
Default Logging of Statistics Type 4..............................................................10
Binding Syntax for IPv6 Machines .................................................................11
Compatibility with Server Versions................................................................11
Default Installation Directory .......................................................................12
2
OVERVIEW
13
Introduction to Helix Proxy ..............................................................................13
Helix Gateway .............................................................................................13
Benefits of Using Helix Proxy ........................................................................13
Media Formats............................................................................................14
Protocols, Transports, and Packet Formats...................................................15
Media Player Configuration .........................................................................17 vi
Helix Proxy Administration Guide
Media Delivery Methods ..................................................................................18
Accounting Connections .............................................................................18
Content Caching .........................................................................................19
Pull-Splitting ...............................................................................................20
Pass-Through Delivery .................................................................................21
Additional Features .........................................................................................22
Helix Administrator .....................................................................................22
XML-Based Configuration File......................................................................23
Bandwidth Restriction .................................................................................23
Proxy Routing .............................................................................................23
Proxy Redundancy.......................................................................................23
Automatic Bandwidth Detection for Desktop RealPlayer ...............................23
Access Control ............................................................................................24
Authentication ............................................................................................24
Real-Time Monitoring .................................................................................25
Activity and Error Logs.................................................................................25
SNMP.........................................................................................................25
Administering a Server and Proxy Together........................................................25
PAR T II: CONF IGURATION
3
INSTALLATION AND TESTING
29
Understanding Installation Issues .................................................................