Block Access To Services And Applications - NETGEAR C6300BD User Manual

The BASIC Home screen displays.
5. Select ADVANCED > Security > Block Sites.
The Block Sites screen displays.
6. Scroll down and select the Allow trusted IP address to visit blocked sites check box.
7. In the Trusted IP Address field, enter the IP address of the trusted device.
The first three octets of the IP address are automatically populated and depend on the IP
address that is assigned to the cable data gateway on the LAN Setup screen.
8. Click the Apply button.
Your settings are saved.

Block Access to Services and Applications

Services are functions that servers perform at the request of client devices. For example,
web servers serve web pages, time servers serve time and date information, and game hosts
serve data about the moves of the players.
When a device on the Internet sends a request for service to a server, the requested service
is identified by a service or port number. (For this reason, service blocking is also referred to
as port filtering.) The service or port number appears as the destination port number in the
transmitted IP packets. For example, a packet that is sent with the destination port number 80
is an HTTP (web server) request.
The service numbers for many common protocols are defined by the Internet Engineering
Task Force (IETF at http://www.ietf.org/) and published in
Service numbers for other applications are typically chosen from the range 1024–65535 by
AC1900, N900, and N450 WiFi Cable Data Gateways
Manage the Firewall and Secure Your Network
RFC1700, Assigned
62
Numbers.