ZyXEL Communications P-2304R-P1 Series User Manual

 Chapter 12 Firewall

P-2304R-P1 Series User’s Guide

Available 

Services

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

computers from using. Select the port you want to block, and click Add to add the 

port to the Blocked Services field.
A custom port is a service that is not available in the pre-defined Available 

Services list. You must define it using the Type and Port Number fields. See 

 for some examples of services.

Blocked Services

This is a list of services (ports) that are inaccessible to computers on your LAN 

when service blocking is effective. To remove a service from this list, select the 

service, and click Delete.

Type

Select TCP or UDP, based on which one the custom port uses.

Port Number

Enter the range of port numbers that defines the service. For example, suppose 

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

6345-6349.

Add

Click this to add the selected service in Available Services to the Blocked 

Services list.

Delete

Select a service in the Blocked Services, and click this to remove the service 

from the list.

Clear All

Click this to remove all the services in the Blocked Services list.

Schedule to Block

Day to Block

Select which days of the week you want the service blocking to be effective.

Time of Day to 

Block

Select what time each day you want service blocking to be effective. Enter times in 

24-hour format; for example, 3:00pm should be entered as 15:00.

Apply

Click this to save your changes and to apply them to the ZyXEL Device.

Reset

Click this to set every field in this screen to its last-saved value.

Table 59   Security > Firewall > Services