NETGEAR WNR854T Configuring a User Defined Service, Blocking Services by IP Address Range

NETGEAR RangeMax™ NEXT Wireless Router WNR854T User Manual
4-4 Restricting Access From Your Network
v1.1, January 2007
— To specify a service for blocking, click Add. The Block Services Setup menu appears.
— From the Service Type list, select the application or service to be allowed or blocked. The
list already displays several common services, but you are not limited to these choices. To
add any additional services or applications that do not already appear, select User Defined.
Configuring a User Defined Service
To define a service, first you must determine which port number or range of numbers is used by
the application. The service port numbers for many common protocols are defined by the Internet
Engineering Task Force (IETF) and published in RFC1700, “Assigned Numbers.” Service
numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of
the application. Port number information can often be determined by contacting the publisher of
the application, by asking user groups or newsgroups, or by searching.
— Enter the Starting Port and Ending Port numbers. If the application uses a single port
number, enter that number in both boxes.
— If you know that the application uses either TCP or UDP, select the appropriate protocol. If
you are not sure, select Both.
Blocking Services by IP Address Range
Under the heading Filter Services For, you can block the specified service for a single computer, a
range of computers (having consecutive IP addresses), or all computers on your network.
Figure 4-3