ZyXEL Communications P-335WT - Manual (Page 188)

P-335 Series User’s Guide
188 Chapter 13 Firewall
Figure 84 Firewall: Service
The following table describes the labels in this screen.
Table 58 Firewall: Service
LABEL DESCRIPTION
Enable Services
Blocking
Select this check box to enable this feature.
Available Service 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.
Blocked Service 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.
Type Services are either TCP and/or UDP. Select from either TCP or UDP.