ZyXEL Communications PLA-400 V2 - V3.0.5 Guía de usuario descargar pdf (Pagina 149)

ZyAIR Wireless Gateway Series User’s Guide

Firewall Screens 12-11

Table 12-3 Creating/Editing A Firewall Rule

LABEL DESCRIPTION

Enable Services

Blocking

Select the check box to activate service blocking.

Available Services This is a list of pre-defined services (ports) you may prohibit your LAN computers

from using. Select the port you want to block using the drop-down list and click Add

to add the port to the Blocked Service field.

Please see Table 12-4 for more information on services available

Blocked Services This is a list of services (ports) that will be inaccessible to computers on your LAN

once you enable service blocking. Choose the IP port (TCP, UDP or TCP/UDP)

that defines your customized port from the drop down list box.

Custom Port

A custom port is a service that is not available in the pre-defined Available

Services list and you must define using the next two fields.

For a comprehensive list of port numbers and services, visit the IANA (Internet

Assigned Number Authority) web site.

Type

Services are either TCP and/or UDP. Select from either TCP or UDP.

Port Number Enter the port number range that defines the service. For example, suppose you

want to define the Gnutella service. Select TCP type and enter a port range from

6345-6349.

Add

Select a service from the Available Services drop-down list and then click Add to

add a service to the Blocked Service.

Delete

Select a service from the Blocked Services List and then click Delete to remove

this service from the list.

Clear All

Click Clear All to empty the Blocked Service.

Day to Block Select everyday or the day(s) of the week to activate blocking.

Time of Day to

Block (24-Hour

Format)

Select the time of day you want service blocking to take effect. Configure blocking

to take effect all day by selecting the All Day check box. You can also configure

specific times that by entering the start time in the Start (hr) and Start (min) fields

and the end time in the End (hr) and End (min) fields. Enter times in 24-hour

format, for example, “3:00pm” should be entered as “15:00”.

Apply

Click Apply to save your customized settings.

Reset

Click Reset to reload the previous configuration for this screen.

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