Verizon Fios User Manual page 86

07 / CONFIGURING
SECURITY SETTINGS
86
Additional features, including surfng restrictions and access
control, can also be confgured locally through the user interface or
remotely by a service provider.
The frewall 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 Fios Router
or rejected and barred from passing through your Fios Router,
according to a flexible and confgurable set of rules. These rules
are designed to prevent unwanted intrusions from the outside, while
allowing local network users access to internet services.
The frewall 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 frewall receives is checked
against the frewall rules to determine whether the request should
be allowed to pass through the frewall. 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
Fios Router, the frewall identifes the request type and origin, such
as HTTP and a specifc computer in the local network. Unless your
Fios Router is confgured to block requests of this type from this
computer, the frewall allows this type of request to pass to the
internet.
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