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Virtual Server
If you configure the Barricade as a virtual server, remote users accessing
services such as web or FTP at your local site via public IP addresses can
be automatically redirected to local servers configured with private IP
addresses. In other words, depending on the requested service (TCP/UDP
port number), the Barricade redirects the external service request to the
appropriate server (located at another internal IP address).
For example, if you set Type/Public Port to TCP/80 (HTTP or web) and
the Private IP/Port to 192.168.2.2/80, then all HTTP requests from
outside users will be transferred to 192.168.2.2 on port 80. Therefore, by
just entering the IP address provided by the ISP, Internet users can access
the service they need at the local address to which you redirect them.
The more common TCP service ports include:
HTTP: 80, FTP: 21, Telnet: 23, and POP3: 110.
A list of ports is maintained at the following link:
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Special Application
Some applications require multiple connections, such as Internet gaming,
video-conferencing, and Internet telephony. These applications may not
work when Network Address Translation (NAT) is enabled. If you need to
run applications that require multiple connections, use these screens to
specify the additional public ports to be opened for each application.
•
Use the Popular applications drop down menu to quickly copy the
entry to the table.
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NAT Mapping Table
This screen displays the current NAPT (Network Address Port
Translation) address mappings. Click
Refresh
to update the table.
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Routing
These screens define routing related parameters, including static routes and
RIP (Routing Information Protocol) parameters.
Static Route
Click
Add
to add a new static route to the list, or check the box of an
already entered route and click
Modify
. Clicking
Delete
will remove an
entry from the list.
Parameter
Description
Index
Check the box of the route you wish to delete or modify.
Network Address
Enter the IP address of the remote computer for which
to set a static route.
Subnet Mask
Enter the subnet mask of the remote network for which
to set a static route.
Gateway
Enter the WAN IP address of the gateway to the remote
network.
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RIP
Parameter
Description
General RIP Parameters
RIP mode
Globally enables or disables RIP.
Auto summary
If Auto summary is disabled, then RIP packets will
include sub-network information from all
sub-networks connected to the router. If enabled,
this sub-network information will be summarized
to one piece of information covering all
sub-networks.
Table of current Interface RIP parameter
Interface
The WAN interface to be configured.
Operation Mode
Disable: RIP disabled on this interface.
Enable: RIP enabled on this interface.
Silent: Listens for route broadcasts and updates its
route table. It does not participate in sending route
broadcasts.
Version
Sets the RIP (Routing Information Protocol)
version to use on this interface.
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