Verizon Wireless Quantum FiOS-G1100, Руководство пользователя

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06 / CONFIGURING
SECURITY SETTINGS
Additional features, including surfi ng restrictions and access control,
can also be confi gured locally through the user interface or remotely by
a service provider.
The fi rewall regulates the fl ow 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 Gateway or rejected
and barred from passing through your Gateway, according to a fl exible
and confi gurable set of rules. These rules are designed to prevent
unwanted intrusions from the outside, while allowing local network
users access to Internet services.
The fi rewall 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 fi rewall receives is checked against
the fi rewall rules to determine whether the request should be allowed
to pass through the fi rewall. 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
Gateway, the fi rewall identifi es the request type and origin, such
as HTTP and a specifi c computer in the local network. Unless your
Gateway is confi gured to block requests of this type from this
computer, the fi rewall allows this type of request to pass to the
Internet.
When the website is returned from the web server, the fi rewall
associates the website with this session and allows it to pass;