What's A Firewall - Polycom ViaVideo User Manual

Appendix

What's a Firewall?

ViaVideo User's Guide
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.
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
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
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
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