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Page 26 / 37 Scroll up to view Page 21 - 25
Protecting Your Wireless Network
B
SVG6x82 Series Wireless Voice Gateway
•
User Guide
18
590934-001-a
Basic Firewall
The Web Content Filter page has various settings related to blocking or exclusively allowing different
types of data through the CMRG from the WAN to the LAN. There are three security firewall protection
levels (low, medium, and high) which correspond to the number of services allowed.
Firewall Protection turns ON the Stateful Packet Inspection (SPI) firewall features. Block Fragmented IP
packets prevents all fragmented IP packets from passing through the firewall. Port Scan Detection
detects and blocks port scan activity originating on both the LAN and WAN. IP Flood Detection detects
and blocks packet floods originating on both the LAN and WAN.
You can block Java Applets, Cookies, ActiveX controls, popup windows, and Proxies. Firewall Protection
turns on the Stateful Packet Inspection (SPI) firewall features.
To open the Firewall Basic Web Content Filter page:
1.
Click
Firewall
on the SVG6x82 Menu Options bar.
2.
Click
Basic
from the Status submenu options.
Figure 11 – Firewall Basic Web Content Filter Page
3.
Click the Firewall Protection drop-down to select the protection level or turn OFF security protection.
ο
High
- Safest configuration, highest security
ο
Medium
- Common configuration, modest risk
ο
Low
- Minimum security, higher risk
ο
Off
- No security, highest risk
4.
Click
Enable
for each Web filter you want to set for the firewall and then click
Apply
.
Firewall Web Filter
The Firewall web filter page allows you to filter outbound connections, restrict or grant access to
specified MAC addresses. To open the Firewall Web Filtering page:
1.
Click
Firewall
on the SVG6x82 Menu Options bar.
2.
Click
Web Filter
from the Status submenu options.
3.
Click
Create
and enter the information for each web filter you want to create.
Page 27 / 37
Protecting Your Wireless Network
B
SVG6x82 Series Wireless Voice Gateway
•
User Guide
19
590934-001-a
Figure 12 – Firewall Web Filtering Page
Firewall Local Log
You can set up email to enable automatic email alerts. The Local Event Log can send out firewall attack
reports in two ways:
•
Individual emails are sent out automatically each time the firewall is under attack
•
A local log is stored within the gateway and displayed in table form on the Local Log page
Individual emails will now be sent to the specified address each time an attack is detected.
To open the Firewall Local Log page:
1.
Click
Firewall
on the SVG6x82 Menu Options bar.
2.
Click
Local Log
from the Status submenu options.
Figure 13 – Firewall Local Log Page
3.
Enter your email address for the Contact Email Address field.
4.
Enter the SMTP email account, user name, and password in the next fields.
Note
: The Outgoing) mail server address is provided b your service provider.
5.
Select
Enable
checkbox if you want to receive firewall email alerts, and then click
Apply
.
6.
Click
E-mail Log
to send a summary of the Event Log Table to the contact specified contact email
address.
7.
Click
Clear Log
to clear the table.
Page 28 / 37
Protecting Your Wireless Network
B
SVG6x82 Series Wireless Voice Gateway
•
User Guide
20
590934-001-a
Firewall Remote Log
This Firewall configuration sends firewall attack reports to a standard SysLog server so that multiple
instances can be logged over a period of time. You can select individual attack or configuration items to
send to the SysLog server so that only the items of interest will be monitored. You can log any of the
following:
•
Permitted connections
- Select to have the server e-mail you logs of who is connecting to your
network.
•
Blocked connections
- Select to have the server e-mail you logs of who is blocked from connecting
to your network.
•
Known Internet attack types
- Select to have the server e-mail you logs of known Internet attacks
against your network.
•
Product configuration events
- Select to have the server e-mail you logs of the basic product
configuration events logs.
Note
: The SysLog server must be on the same network as the Private LAN behind the Configuration
Manager (typically
192.168.0.x
).
To open the Firewall Remote Log page:
1.
Click
Firewall
on the SVG6x82 Menu Options bar.
2.
Click
Remote Log
from the Status submenu options.
Figure 14 – Firewall Remote Log Page
3.
Select all the desired event types that you want to monitor.
4.
Enter the last byte (from
10
to
254
) of the IP address of the SysLog server.
Note
: Normally, the IP address of this SysLog server is hard-coded so that the address does not
change and always agrees with the entry on this page.
5.
Click
Apply.
Page 29 / 37
Protecting Your Wireless Network
B
SVG6x82 Series Wireless Voice Gateway
•
User Guide
21
590934-001-a
Setting Up the DMZ Host
The DMZ (De-militarized Zone) is a computer or small sub-network located outside the firewall, between
the trusted internal private LAN and the untrusted public Internet that prevents direct access by outside
users to private data. DMZ host lets you specify the default recipient of WAN traffic that NAT is unable to
translate to a known local computer.
You can configure one computer to be the DMZ host. This setting is generally used for computers using
problem applications that use random port numbers and do not function correctly with specific port
triggers or the port forwarding setups. If you set up a computer as a DMZ Host, set this back to zero
when you are finished with the needed application, since this computer will be effectively exposed to the
public Internet, though still protected from Denial of Service (DoS) attacks via the Firewall.
For example, you can set up a web server on a DMZ computer to enable outside users to access your
website without exposing confidential data on your network.
A DMZ is also useful to play interactive games that may have a problem running through a firewall. You
can leave a computer used for gaming only exposed to the Internet while protecting the rest of your
network.
To open the DMZ Host page:
1.
Click
Advanced
on the SVG6x82 Menu Options bar.
2.
Click
DMZ Host
from the Status submenu options.
Figure 15 – Advanced DMZ Host Page
3.
Enter the last byte (from
10
to
254
) of the IP address of the computer you want to set up as the
DMZ host.
4.
Click
Apply
to activate the selected computer.
Page 30 / 37
Monitoring Your Network
B
SVG6x82 Series Wireless Voice Gateway
•
User Guide
22
590934-001-a
Monitoring Your Network
Use the SVG6x82 Status pages to obtain information about the gateway hardware and software, MAC
address, gateway IP address, serial number; and to monitor the gateway system connection.
Viewing the Gateway Software Information
The Software status page displays information about the hardware version, software version, MAC
address, cable modem IP address, serial number, system "up" time, and network registration status.
To open the Status Software page:
1.
Click
Status
on the SVG6x82 Menu Options bar.
2.
Click
Software
from the Status submenu options.
Figure 16 – SVG6x82 Status Software Page
3.
Click the
Refresh
button in your web browser to refresh the information on this page.
7

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