ZyXEL MAX-306 User Guide - Page 208

Technical Reference, 16.4.1 Stateful Inspection Firewall., Table 80

Page 208 highlights

Chapter 16 The Firewall Screens Table 80 TOOLS > Firewall > Service Setting (continued) LABEL DESCRIPTION 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 to save your changes. Reset Click to restore your previously saved settings. 16.4 Technical Reference The following section contains additional technical information about the WiMAX Device features described in this chapter. 16.4.1 Stateful Inspection Firewall. Stateful inspection firewalls restrict access by screening data packets against defined access rules. They make access control decisions based on IP address and protocol. They also "inspect" the session data to assure the integrity of the connection and to adapt to dynamic protocols. These firewalls generally provide the best speed and transparency; however, they may lack the granular application level access control or caching that some proxies support. Firewalls, of one type or another, have become an integral part of standard security solutions for enterprises. 208 User's Guide

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Chapter 16 The Firewall Screens
User’s Guide
208
16.4
Technical Reference
The following section contains additional technical information about the WiMAX
Device features described in this chapter.
16.4.1
Stateful Inspection Firewall.
Stateful inspection firewalls restrict access by screening data packets against
defined access rules. They make access control decisions based on IP address and
protocol. They also "inspect" the session data to assure the integrity of the
connection and to adapt to dynamic protocols. These firewalls generally provide
the best speed and transparency; however, they may lack the granular application
level access control or caching that some proxies support. Firewalls, of one type or
another, have become an integral part of standard security solutions for
enterprises.
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 to save your changes.
Reset
Click to restore your previously saved settings.
Table 80
TOOLS > Firewall > Service Setting (continued)
LABEL
DESCRIPTION