Verizon CR1000A User Manual page 80

06 / CONFIGURING
ADVANCED SETTINGS
80
of network security while enabling the safe use of interactive
applications, such as internet gaming and video conferencing.
Additional features, including surfing restrictions and access
control, can also be configured locally through the user interface or
remotely by a service provider.
The firewall regulates the flow of data between the local
network and the internet. Both incoming and outgoing data are
inspected, then either accepted and allowed to pass through your
Verizon Router or rejected and barred from passing through your
Verizon Router, according to a flexible and configurable set of rules.
These rules are designed to prevent unwanted intrusions from
the outside, while allowing local network users access to internet
services.
The firewall rules specify the type of services on the internet that
are accessible from the local network and types of services in the
local network that are accessible from the internet.
Each request for a service that the firewall receives is checked
against the firewall rules to determine whether the request should
be allowed to pass through the firewall. If the request is permitted to
pass, all subsequent data associated with this request or session is
also allowed to pass, regardless of its direction.
For example, when accessing a website on the internet, a request
is sent to the internet for this site. When the request reaches your
Verizon Router, the firewall identifies the request type and origin,
such as HTTP and a specific computer in the local network. Unless
your Verizon Router is configured to block requests of this type
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