1. Home
    2. /
  2. Manuals
    3. /
  3. RCA
    4. /
  4. DCW725
    5. /
  5. 8
Page 36 / 72 Scroll up to view Page 31 - 35
Chapter 3: Advanced Configuration
34
Chapter 3
Network Web Page Group
WAN Web Page (Fig. 22)
This page gives you the ability to enter some data your cable company may require, as explained
before in Mandatory User Configuration. In addition, it enables you to view your WAN side IP
address and lease information.
Your gateway can provide NAT/PAT (Network and Port Address Translation) as an element of
security to prevent others from reaching your PCs when not authorized. To accomplish this, the
gateway watches packets you send from your PC to Internet sites. Each time you send to a site
(destination IP address) and application at that site (port), it translates your PC’s original IP and
source port to new ones, and adds a row to its Connection Table maintained internally. (Note the
different meaning of ‘connection’ here to describe an IP connection versus a physical cabling
connection). If and when that site/application replies, it looks up the connection and reverses the
IP/port process to direct the response to your PC.
The Connection Table manages itself, but you can also force this table to be cleared manually. To
do this, click the
Renew NAT Lease
button.
You can enter a spoofed MAC address that causes your gateway networking stack to use that
MAC address when communicating instead of the usual WAN MAC address (CM label + 2, as
explained in Chapter 2). Enter the desired MAC address and click
Apply
.
Caution: If you enter a MAC address in use by another party, it can cause an address conflict on
the network that could affect both you and that party.
Fig. 22
Page 37 / 72
Chapter 3: Advanced Configuration
Chapter 3
35
LAN and Computers Web Pages (Fig. 23 and 24)
These pages give you the ability to activate and deactivate the DHCP server function of your
gateway, and, if the DHCP server is activated, to see DHCP leases it has provided.
With this function activated, your cable company’s DHCP server provides one IP address for your
gateway, and your gateway’s DHCP server provides IP addresses, starting at the address you set in
IP Address on the LAN page
, to your PCs. A DHCP server
leases
an IP address with an expiration
time.
To change the lowest IP address that your gateway will issue to your PCs, enter it into the
IP
Address
box and then click
Apply
.
To set the maximum number of PCs to which the gateway will issue IP addresses, enter it in the
Number of CPEs
box and then click
Apply
. (
CPE
is another term sometimes used for PC.)
The
Computers web page
section shows leases the gateway DHCP server has made, including the
IP and MAC addresses of each PC’s TCP/IP stack. Since MAC addresses are unique and permanently
fixed into hardware, you can identify any PC listed by its MAC address. The gateway provides
leases for 7 days, and has an automatic renewal mechanism that will keep extending a lease as
long as the associated PC remains active. If your PC is set to “obtain an IP address automatically,”
it is set to perform DHCP each time it is rebooted.
You can cancel an IP address lease by selecting it in the
DHCP Client Lease Info
list and then
clicking the
Force Available
button. If you do this, you may have to perform a DHCP Renew on
that PC, so it can obtain a new lease.
Fig. 23
Fig. 24
Page 38 / 72
Chapter 3: Advanced Configuration
36
Chapter 3
Advanced Web Page Group
Options Web Page (Fig. 25)
This page allows you to enable/disable some features of the Wireless Cable Gateway. Check
WAN
Blocking
and then click
Apply
to prevent others on the WAN side from being able to ping your
gateway. With WAN Blocking on, your gateway will not respond to pings it receives, effectively
“hiding” your gateway.
Check
Ipsec Pass Through
and then click
Apply
to enable IpSec type packets to pass WAN <=>
LAN. IpSec (IP Security)
is a security mechanism used in Virtual Private Networks (VPNs). E.g., your
employer may offer VPN connectivity to your office network to provide security.
Check
PPTP Pass Through
and then click
Apply
to enable PPTP type packets to pass WAN <=>
LAN. PPTP (Point to Point Tunneling Protocol) is another mechanism sometimes used in VPNs.
Check
Remote Config Management
and then click
Apply
to make the configuration web pages
in your gateway accessible from the WAN side. Then you could, for example, access your home
gateway configuration from your workplace, if that location also had Internet connectivity.
Page access is limited to only those who know the gateway access password you set using the
Status...Password web page.
This function works only if your gateway is in the RG mode. When accessing your gateway from
a remote location, you must use HTTP port 8080 and your IP Stack 3 address. This is the "WAN IP
address" that appears at the Network...WAN page. For example, if this IP address were 157.254.5.7,
you would navigate to http://157.254.5.7:8080 to reach your gateway from a remote location.
Fig. 25
Page 39 / 72
Chapter 3: Advanced Configuration
Chapter 3
37
Check
Multicast Enable
and then click
Apply
to enable multicast traffic to pass WAN <=> LAN.
You may need to enable this to see some types of broadcast streaming and content on the
Internet, such as webcasting of a popular live event.
IP Filtering Web Page (Fig. 26)
This page enables you to enter the IP address ranges of PCs on your LAN that you don’t want to
have outbound access to the WAN. These PCs can still communicate with each other on your LAN,
but packets they originate to WAN addresses are blocked by the gateway.
MAC Filtering Web Page (Fig. 27)
This page enables you to enter the MAC address of specific PCs on your LAN that you wish to NOT
have outbound access to the WAN. As with IP filtering, these PCs can still communicate with each
other through the gateway, but packets they send to WAN addresses are blocked.
Fig. 26
Fig. 27
Page 40 / 72
Chapter 3: Advanced Configuration
38
Chapter 3
Fig. 28
Port Filtering Web Page (Fig. 28)
This page enables you to enter ranges of destination ports (applications) that you don’t want
your LAN PCs to send packets to. Any packets your LAN PCs send to these destination ports will
be blocked. For example, you could block access to worldwide web browsing (HTTP = port 80) but
still allow email service (SMTP port 25 and POP-3 port 110).
To enable filtering, set Start Port and
End Port for each range, and click Apply. To block only one port, set both Start and End ports the
same.

Rate

3.5 / 5 based on 2 votes.

Popular RCA Models

Famous Router IPs
Famous Router Companies
Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top