ZyXEL Communications Network Device P-2302 User Manual page 185

Table 79 Security > Firewall > Services
LABEL
Available
Services
Blocked Services
Type
Port Number
Add
Delete
Clear All
Schedule to Block
Day to Block
Time of Day to
Block
Apply
Cancel
P-2302HWUDL-P1 Series User's Guide
DESCRIPTION
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
Appendix G on page 339 for some examples of 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.
Select TCP or UDP, based on which one the custom port uses.
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.
Click this to add the selected service in Available Services to the Blocked
Services list.
Select a service in the Blocked Services, and click this to remove the service
from the list.
Click this to remove all the services in the Blocked Services list.
Select which days of the week you want the service blocking to be effective.
Select what time each day you want service blocking to be effective. Select All
day to always block the selected services. Enter times in 24-hour format; for
example, 3:00pm should be entered as 15:00.
Click this to save your changes and to apply them to the ZyXEL Device.
Click this to set every field in this screen to its last-saved value.
Chapter 14 Firewall
185