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Page 56 / 80 Scroll up to view Page 51 - 55
Wireless Cable Voice Gateway Model CVG824G Reference Manual
4-4
Managing Your Network
1.0, November 2006
About LAN IP Settings
The gateway is preconfigured to use private IP addresses on the LAN side, and to act as a DHCP
server. The LAN IP settings are explained below:
•
LAN IP address:
This is the IP address of the gateway.
The default is 192.168.0.1.
•
Subnet mask:
This is the LAN subnet mask of the gateway. The default is 255.255.255.0.
Combined with the IP address, the subnet mask allows a device to know which other addresses
are local to it, and which must be reached through a gateway or router.
These addresses are part of the IETF-designated private address range for use in private
networks, and should be suitable in most applications. If your network has a requirement to
use a different IP addressing scheme, you can make those changes in the LAN IP page.
•
DHCP Server:
By default, the gateway is a Dynamic Host Configuration Protocol (DHCP)
server. See
“Using the Gateway as a DHCP Server” on page 4-5
.
•
Starting Address and Ending Address
: Specify the pool of IP addresses to be assigned by
setting the Starting IP Address and Ending IP Address. These addresses should be part of the
same IP address subnet as the gateway’s LAN IP address. Using the default addressing
scheme, you should define a range between 192.168.0.10 and 192.168.0.253. The range of IP
addresses between 192.168.0.2 and 192.168.0.9 can be used for devices with fixed (or static)
addresses.
•
DHCP Reservation Lease Info:
View information about each PC that has been assigned a
DHCP lease by the gateway. The MAC address of the PC, IP address assigned and the
expiration time of the DHCP lease are listed. You can manually revoke the DHCP leases by
clicking Clear DHCP Leases.
Note:
If you change the LAN IP address of the gateway while connected through the
browser, you will be disconnected. You must then open a new connection to
the new IP address and log in again
Page 57 / 80
Wireless Cable Voice Gateway Model CVG824G Reference Manual
Managing Your Network
4-5
1.0, November 2006
Using the Gateway as a DHCP Server
By default, the gateway is a DHCP server. It can assign IP, DNS server, and default gateway
addresses to all computers connected to the LAN. The default wireless voice gateway address is its
LAN address. The wireless voice gateway assigns IP addresses to the network computers from a
pool of addresses specified in the Starting Address and Ending Address fields. Each pool address
is tested before it is assigned to avoid duplicate addresses on the LAN.
The gateway delivers the following parameters to any LAN device that requests DHCP:
•
An IP Address from the range you have defined.
•
Subnet Mask.
•
Gateway IP Address is the gateway’s LAN IP address.
•
Primary DNS Server, if you entered a Primary DNS address in the Basic Settings page;
otherwise, the gateway’s LAN IP address.
•
Secondary DNS Server, if you entered a Secondary DNS address in the Basic Settings page.
Configuring the LAN IP Settings
You can use the LAN IP Setup page to configure LAN IP services such as the IP address of the
gateway and DHCP.
To configure the LAN IP:
1.
Under Advance on the main menu, select LAN IP. The LAN IP screen will display.
2.
Enter the
•
LAN IP Address you want to assign to your gateway. The default is 192.168.0.1.
•
Subnet Mask for your network IP address. The default is 255.255.255.0. (Unless you are
implementing subnetting, use the default subnet mask.)
Note:
If another device on your network is the DHCP server, or if you will manually
configure the network settings of all of your computers, select No for the DHCP
Server. For more information about DHCP and IP addresses, see the link to
“Preparing a Computer for Network Access:” in Appendix B
.
Note:
The gateway implements a DNS Relay function. When it receives a DNS request
on the LAN, it passes it to the DNS server specified on the WAN. It then relays the
response back to the original requesting PC.
Page 58 / 80
Wireless Cable Voice Gateway Model CVG824G Reference Manual
4-6
Managing Your Network
1.0, November 2006
•
Enable the DHCP Server to assign IP addresses to your computers automatically; or
disable the DHCP Server and assign IP addresses to your computers manually
.
•
Enter a Starting IP Address for the first of the contiguous addresses in the address pool.
The default start address is 192.168.0.10.
•
Enter an Ending IP Address for the last of the contiguous addresses in the address pool.
The default end address is 192.168.0.19.
3.
Click
Apply
to save your settings.
To configure DHCP server reservation parameters for your LAN:
1.
Enter the MAC address of the PC for which you want to reserve an IP Address.
2.
Enter a free IP Address for the PC.
Note:
If you disable the DHCP server, you must assign a static IP address to your
PC in order to reconnect to the gateway and enable the DHCP server
again.
Figure 4-3
Page 59 / 80
Wireless Cable Voice Gateway Model CVG824G Reference Manual
Managing Your Network
4-7
1.0, November 2006
3.
CLick
Add.
To remove a reserved IP from the DHCP Reservation Lease Info table:
1.
Check the radio button adjacent to the entry you want to remove from the table.
2.
Click
Delete.
The DHCP Client Lease details for all computers in the LAN gateway are shown in the DHCP
Client Lease Info table. To clear all DHCP Client leases, click
Clear DHCP Leases.
Viewing and Emailing Event Log Information
The gateway logs security-related events such as denied incoming service requests and hacker
probes. You can enable email notification to receive these logs in an email message. Log entries
are described in
Table 4-1
.
To receive logs and alerts by email, you must provide your email information in the Email section
of the Logs screen, as shown below.
To enable emailing of logs:
1.
In the Contact Email Address box, type the e-mail address to which the logs will be sent. Use
a full e-mail address (for example, [email protected]).
2.
In the SMTP Server Name box, type the outgoing SMTP mail server of your ISP (for example,
mail.myISP.com). You may be able to find this information in the configuration menu of your
e-mail program. If you leave this box blank, no alerts or logs will be sent.
3.
Check the E-mail Alerts Enable radio box.
4.
Click E-mail Log to send the log immediately
Table 4-1:
Security Log entry descriptions
Field
Description
Description
The type of event and what action was taken if any.
Count
This is a reference number for each event.
Last Occurrence
The date and time the log entry was recorded.
Target
The name or IP address of the destination device of Web site.
Source
The IP address of the initiating device for this log entry.
Page 60 / 80
Wireless Cable Voice Gateway Model CVG824G Reference Manual
4-8
Managing Your Network
1.0, November 2006
5.
Click
Apply
.
.
Restoring Factory Default Configuration Settings
The configuration settings are stored in a configuration file in the gateway. You can use Erase to
restore the factory default configuration settings. The default settings are listed in
“Factory Default
Settings” in Appendix A
.
To erase the configuration settings and return them to the factory default settings:
1.
Under Maintenance on the main menu, select Set Password.
2.
Check the Yes radio box to Restore Factory Defaults for your gateway.
3.
Click
Apply
. The gateway will then reboot.
Figure 4-4
Figure 4-5

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