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Page 16 / 43 Scroll up to view Page 11 - 15
Port Filtering Tab
This screen allows you to configure TCP/UDP port filters. This feature
allows you to filter users by network port numbers
To filter users by network port numbers, enter a range of network ports into
the
Start Port
and
End Port
fields.
Select the protocol for each port number
you want to filter,
TCP
,
UDP
, or
Both
.
Click the
Enabled
button to enable
the changes.
Users connected to the Gateway will no longer be able to access
any port number listed there.
Click the
Apply
button to apply any changes to the settings.
25
Cable Gateway
Instant Broadband
®
Series
MAC Filtering Tab
This screen allows you to configure MAC Address filters.
Enter the
MAC Addresses
that you want to filter into the
MAC Address Filters
fields.
Click the
Apply
button to apply any changes to the settings.
24
Figure 5-3
Figure 5-3
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Page 17 / 43
You may use this feature to establish a web server or FTP server for Internet
users to access. Be sure that you enter a valid IP address; you may need to
establish a static IP address with your ISP in order to properly run an Internet
server. For added security, Internet users will be able to communicate with the
server, but they will not actually be connected. The packets will be forwarded
through the Cable Gateway instead. If you need to forward all ports to one PC,
see the DMZ Host Tab.
To add a server using Forwarding:
1.
Enter the
IP address
of the server that you want the Internet users to be
able to access into the
Local IP Adr
field.
To find the IP address, go to
“Appendix D: Finding the MAC Address and IP Address for Your Ethernet
Adapter.”
2.
Enter the
range
of the external port(s) used by the server or Internet appli-
cation in the Start Port and End Port columns. Check with the Internet
application software documentation for more information.
3.
Select the protocol for each port number you want to forward,
TCP
,
UDP
,
or
Both
.
4.
Click the
Enabled
button to enable the changes.
5.
Configure as many entries as needed—the Cable Gateway supports up to
ten ranges of ports.
To delete a server entry, enter
0
in the Port and Local IP Address fields.
Click the
Apply
button to apply any changes.
27
Instant Broadband
®
Series
26
Cable Gateway
Forwarding Tab
This screen allows you configure port forwarding for local IP Addresses.
Port Forwarding sets up public services on your network, such as web servers,
ftp servers, e-mail servers, or other specialized Internet applications.
(Specialized Internet applications are any applications that use Internet access
to perform functions such as videoconferencing or online gaming. Some
Internet applications may not require any forwarding.) When users send this
type of request to your network via the Internet, the Cable Gateway will for-
ward those requests to the appropriate PC.
Figure 5-3
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Page 18 / 43
DMZ Host Tab
This screen allows you to configure an address that is visible to the WAN.
The DMZ Host setting allows one local computer to be exposed to the
Internet for the use of special-purpose services such as Internet gaming or
video conferencing.
To expose one computer, enter the computer’s IP address into the field and
click the
Apply
button. To Disable DMZ, enter
0
and click the
Apply
button.
29
Cable Gateway
Instant Broadband
®
Series
Port Triggers Tab
This screen allows you configure TCP/UDP port triggers. Port Triggering is a
method that allows multiple computers on your network to access a server, such
as a game server.
A trigger request is made to the Router, which
opens an
incoming port for that computer.
To use Port Triggering and allow a computer to access a server:
1.
Enter the
Trigger Range
and
Target Range
of the external port(s) used by the
server or Internet application in the Start Port and End Port columns. Check
with the Internet application software documentation for more information.
2.
Select the protocol for each port you want to forward,
TCP
,
UDP
, or
Both
.
3.
Click the
Enable
button to enable the changes.
To delete a server entry, enter
0
in the
Trigger Range
and
Target Range
fields.
Click the
Apply
button to apply any changes.
28
Figure 5-3
Figure 5-3
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Page 19 / 43
Domain Blocking
Click Enable to use this feature. Then, enter
the website you want to block. Click the
Add
Domain
button after each entry.
To remove a
word from the list, highlight the word, then
click the
Remove Domain
button.
Deny Domains
Click
Deny Domains
if you want to disallow
the websites in the Domain List.
Allow Domains
Click
Allow Domains
if you want to allow a
the websites in the Domain List.
Always Block
Click
Always Block
to block the entries at all
times.
Block by Schedule
Click
Block by Schedule
to block at specific
times and days.
Then, select the range of days
from the drop-down menu for
Days to Block
and select the time from
Time of Day to
Block
.
Days to Block
Select the range of days you want to block
from the drop-down menu.
Time of Day to Block
Select the time of day you want to block from
the drop-down menu.
Web Features
:
Filter Proxy
Click
Enable
to filter proxy.
Filter Cookies
Click
Enable
to filter cookies.
Filter Java Applets
Click
Enable
to filter Java applets.
Filter ActiveX
Click
Enable
to filter ActiveX.
Filter Popup Windows
Click
Enable
to filter popup windows.
Firewall Protection
Click
Enable
to use firewall protection.
Click the
Apply
button.
31
Cable Gateway
Instant Broadband
®
Series
30
The Web Filter Tab
This page allows you to configure web page filtering.
Keyword Blocking
Click
Enable
to use this feature. Then, enter
the word you want to block. All websites con-
taining that word will be blocked. Click the
Add Keyword
button after each entry.
To
remove a word from the list, highlight the
word, then click the
Remove Keyword
button.
The Firewall Tabs
Figure 5-3
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Page 20 / 43
33
Cable Gateway
Instant Broadband
®
Series
The Event Log Tab
This screen provides access to the firewall event log.
Contact Email Address
Enter your email address into the Contact
Email Address field so you can be notified
when there is an occurrence.
SMTP Server Name
Enter your server name into the SMTP Server
Name field.
Email Alerts
To enable the
Email Alerts
, click the box next
to
Enable
.
Description
A brief description is given of the occurrence.
Count
A list is made of the amount of occurrences.
Last Occurrence
The time and date of the last occurrence is
given.
Target
The target of the occurrence is given.
Source
The source of the occurrence is given.
Click the
Apply
button to apply the changes. Click the
E-mail Log
button to
view the log. Click the
Clear Log
button to clear the log.
32
The Software Tab
This screens shows a summary of information on the Cable Gateway, its soft-
ware, and its status, as shown in Figure 5-3. There are two sections:
Information and Status.
Information
Standard Specification Compliant
This field identifies which version of
various cable industry standards (i.e.
DOCSIS) and standards version number
(i.e.. Ver.1.1 ) the Cable Gateway com-
plies to.
Hardware Version
This field identifies the version of this
Cable Gateway’s hardware.
Software Version
This field identifies the version of
firmware running on the Cable Gateway.
The Status Tabs
Figure 5-3
Figure 5-3
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