Comtrend Corporation ct-5611, Руководство пользователя

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Allows only one PC on the LAN
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The public IP address assigned by the remote side using the PPP/IPCP
protocol is actually not used on the WAN PPP interface. Instead, it is
forwarded to the PC’s LAN interface through DHCP. Only one PC on the LAN
can be connected to the remote, since the DHCP server within the ADSL
router has a single IP address to assign to a LAN device.
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NAPT and firewall are disabled when this option is selected.
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The ADSL router becomes the default gateway and DNS server to the PC
through DHCP using the LAN interface IP address.
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The ADSL router extends the IP subnet at the remote service provider to the
LAN PC. That is, the PC becomes a host belonging to the same IP subnet.
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The ADSL router bridges the IP packets between WAN and LAN ports, unless
the packet is addressed to the router’s LAN IP address.
Enable NAT checkbox
If the LAN is configured with a private IP address, the user should select this
checkbox. The NAT submenu on the left side main panel will be displayed after
reboot. The user can then configure NAT-related features after the system comes
up. If a private IP address is not used on the LAN side (i.e. the LAN side is using
a public IP), this checkbox should be de-selected. When the system comes back
after reboot, the NAT submenu will not be displayed on the left main panel.
Enable Firewall
The Internet has made large amounts of information available to the average
computer user at home, in business and in education. For many people, having
access to this information is no longer just an advantage, it is essential. Yet
connecting a private network to the Internet can expose critical or confidential
data to malicious attack from anywhere in the world. Users who connect their
computers to the Internet must be aware of these dangers, their implications and
how to protect their data and their critical systems. Firewalls can protect both
individual computers and corporate networks from hostile intrusion from the
Internet, but must be understood to be used correctly.
2. Click
Next to display the screen on the following page.
Enable IGMP Multicast checkbox:
Tick the checkbox to enable IGMP multicast
(proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP
hosts to report their multicast group memberships to any immediately
neighboring multicast routers.
Enable WAN Service checkbox: Tick this item to enable the ATM service.
Untick it to stop the ATM service.
Service Name:
This is user-defined.