Polycom ViaVideo manual What’s a Firewall?

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Appendix

Network Connection

ViaVideo presents the Multiple IP Addresses screen.,

Chose the IP address of your VPN connection and restart the application.

Once the ViaVideo application re-starts, ViaVideo uses the IP address you specified. This address is displayed in the System Information screen, at the bottom of the application window, and in your address book user information.

What’s a Firewall?

A firewall acts as a security barrier between one network and another. Usually the barrier is erected between an interior network, such as a Small Office Home Office (SOHO) network, and an exterior network, such as the internet.

Firewall services are provided as part of the configuration software with most SOHO - quality routers, such as Linksys® and Cisco®. You can also run a firewall independent of your router by using one of the popular software-only firewall packages, such as Black Ice, Norton® Firewall, and McAfee® Firewall.

With either type of firewall, the task of setting up a video communications connection with the outside world encounters the same problem: firewalls provide security for your network by putting

ViaVideo User’s Guide

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Contents ViaVideo User’s Guide Page Warranty Other RestrictionsTrademark Information Patent InformationImportant Safeguards Regulatory Notices FCC NoticeUnderwriters’ Laboratories’ Statement RADVision StatementContents Network Connection System Information and DiagnosticsAudio Connection Troubleshooting Contents ViaVideo User’s Guide Viii System Requirements and Installation Hardware RequirementsSoftware Requirements Installing SoftwareInstalling Hardware Starting ViaVideo Turn on the CameraInitial Setup ViaVideo built-in microphoneHeadset with microphone Camera Calibration Using Manual DialingPlacing a Call Info icon Call status light IP address Chapter Using the Address Book or Speed Dialing New entry Edit entry Delete entry On-Screen Remote Control Ending a Call Answering CallsClosing ViaVideo Chapter Using ViaVideo Calling FeaturesUsing the Remote Control Hang UpAudio Mute VolumeSnapshot Information Screen Access Window ControlsPicture in Picture PIP Minimize WindowRe-Size the ViaVideo Display Sending SnapshotsLeaving a Callback Message Using the Address Book Address Book and Speed DialDo This Local and Global Address Book Entries Local EntriesGlobal ILS Server Entries Display Global Address Go to the Directory Services screenRegister This System When Powered On Lock Using Speed DialDelete All Controlling Audio and Video Controlling AudioVia the On-Screen Remote DialVia the Audio Screen Muting Video Mute Auto Answer Calls in the Audio screen SystemChapter Collaboration and Application Sharing Multiple IP AddressesChapter System Information and Diagnostics Using the System Information ScreensSystem Information and Diagnostics Diagnostics Network Statistics Video Jitter Advanced StatisticsAudio Jitter Call Status Reset System Camera Calibration Generate Tone Setup Auto Start ViaVideo When Auto Start ViaVideo is selected General323 Auto AnswerShow Half-Size Display When Show Half-Size Display is Show AnimationsUser Name MailDirectory Services Display Global Addresses Register this system when starting ViaVideoLAN and Internet Wins Resolution Default GatewayHost Name IP AddressAudio Volume Control Master VolumeWave Volume LineViaVideo Software SoftwarePC Software Dialing Speeds SetupGatekeeper 323 Display IP Dialing ExtensionMultiple IP Addresses Gatekeeper Dialing Speeds Quality of Service and Firewalls Use Fixed PortsAuto discover NAT IP address NAT outside WAN addressIP Precedence Dynamic BandwidthChapter Audio Connection PC with SpeakersPC with Headphones Headphones Only Headset with Attached Microphone Pick Your Connection Type Simple Connection Just a Modem, ThanksRouter With Firewall Router With Firewall, Using a DMZRouter With NAT, No Firewall Configure Your Connection Through a Virtual Private NetworkSelect the System is Behind a NAT option Configure your ViaVideo for NATWhen you select Auto discover NAT IP Address, ViaVideo Open and Assign Ports in the Firewall System Information screenRouter With Firewall, Using a DMZ Assign your ViaVideo to the DMZ Through a Virtual Private Network Appendix What’s a Firewall? Is it Safe? Opening PortsPort Number Assignation What’s a DMZ? What’s a Network Address Translator? Appendix General Troubleshooting Problem Explanation SolutionAudio Troubleshooting InfoDiagnosticsGenerateVolume Controls Wave, and MasterVideo Troubleshooting Windows Control PanelInfoSetupH.323QOS Bandwidth optionError Messages Installation ErrorsErrors Error Message Explanation SolutionGatekeeper setting SetupH.323Appendix C