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4.6.4.2
Web Filtering
On this page, you can filter the desired web components.
Choose the menu
Firewall
Access Control
Web Filtering
to load the following page.
Figure 4-42 Web Filtering
Check the box before
Enable Web Filtering
and select the web components to be filtered.
4.6.4.3
Access Rules
Choose the menu
Firewall
Access Control
Access Rules
to load the following page.
Figure 4-43 Access Rule
The following items are displayed on this screen:
¾
Access Rules
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Policy:
Select a policy for the entry:
z
Block: When this option is selected, the packets obeyed the rule
will not be allowed to pass through the Router.
z
Allow: When this option is selected, the packets obeyed the rule
will be allowed to pass through the Router.
Service:
Select the service for the entry. Only the service belonging to the
specified service type is limited by the entry. For example, if you
select “Block” for Policy and only FTP for Service, the packets of other
service types can still pass through the Router. You can add new
service types on
4.6.4.4 Service
.
Interface:
Select interface for the entry. The entry will take effect when the
interface to which the data is flowing is selected. WAN or LAN refers
to all the WAN or LAN interfaces.
Source:
Select the Source IP Range for the entries, including the following
three ways:
z
IP/MASK: Enter an IP address or subnet mask. ("0.0.0.0/32"
means any IP).
z
Group: Select a predefined group of users. You can set the group
on4.4.1 Group.
z
ANY: means for any users.
Destination:
Select the Destination IP Range for the entries, including the following
two ways:
z
IP/MASK: Enter an IP address or subnet mask. ("0.0.0.0/32"
means any IP is acceptable).
z
ANY: means for any users.
Effective Time:
Specify the time for the entry to take effect.
Description:
Give a description for the entry.
Priority:
Select this option to specify the priority for the added entries. The
latest enabled entry will be displayed at the end of the list by default.
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¾
List of Rules
You can view the information of the entries and edit them by the Action buttons. The smaller the value
is, the higher the priority is.
The first entry in Figure 4-43 indicates: The TELNET packets transmitted from the hosts within the
network of 192.168.0.0/24 will be not allowed to pass through the Router at 8:00-20:00 from Tuesday
to Saturday.
Note:
For the users in the private network and not being set access rule, the default Policy is Allow.
To specify all IP addresses, type “0.0.0.0 / 32” in the Policy field.
For detailed setting of subnet mask, please refer to
Appendix B
FAQ
.
4.6.4.4
Service
The Service function allows you to specify the protocol and port number to be filtered for Firewall
function conveniently. Protocol name and port range constitute a service type. The Router predefines
three commonly used services such as HTTP, FTP and TELNET and you can also add customized
services if needed.
Choose the menu
Firewall
Access Control
Service
to load the following page.
Figure 4-44 Service
The following items are displayed on this screen:
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¾
Service
Name:
Enter a name for the service. The name should not be more than 28
characters. The name will display in the drop-down list of Protocol on
Access Rule page.
Protocol:
Select the protocol for the service. The system predefined protocols
include TCP, UDP and TCP/UDP.
Dest. Port:
Enter the start and end ports to make a destination port range for the
service. The start port number cannot be greater than the end port
number.
¾
List of Service
You can view the information of the entries and edit them by the Action buttons.
Note:
The service types predefined by the system cannot be modified.
4.7 Services
4.7.1 PPPoE Server
The Router can be configured as a PPPoE server to specify account and IP address to users in LAN and
thus you can control the dial-up of users for a high efficiency in network management.
The PPPoE configuration can be implemented on
General
,
IP Address Pool
,
Account
,
Exceptional
IP
and
List of Account
pages.
4.7.1.1
General
On this page, you can configure PPPoE function globally.
Choose the menu
Services
PPPoE Server
General
to load the following page.
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Figure 4-45 General
The following items are displayed on this screen:
¾
General
PPPoE Server:
Specify whether to enable the PPPoE Server function.
Dial-up Access Only:
Specify whether to enable the Dial-up Access Only function. If
enabled, only the Dial-in Users and the user with Exceptional IP can
access the Internet.
PPPoE User Isolation:
Specify whether to allow the Dial-in Users to communicate with one
another.
Primary/Secondary
DNS:
Enter the Primary/Secondary DNS server address. The default is
0.0.0.0.
Max Sessions:
Specify the maximum number of the sessions for PPPoE server. The
default is 256.
Max Echo-Requests:
Specify the maximum number of Echo-Requests sent by the server to
wait for response. The default is 10. The link will be dropped when the
number of the unacknowledged LCP echo requests reaches your
specified Max Echo-Requests.

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