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LevelOne Broadband Router User Guide
NAT Firewall Protection
The firewall protection provided by the FBR-1700TX is an intrinsic side
effect of NAT (Network Address Translation). All users on the LAN
share a single external IP address. From the external viewpoint, there is
no network, only a single device.
For internal users, the FBR-1700TX acts as a "transparent proxy server",
translating the multiple internal IP addresses into a single external IP
address.
For external requests, any attempt to connect to local resources are
blocked. The FBR-1700TX will not "reverse translate" from a global IP
address to a local IP address.
This type of "natural" firewall provides an impregnable barrier against
malicious attacks.
Package Contents
The following items should be included:
• The LevelOne FBR-1700TX 7 Port Broadband Router For ADSL/Cable
Modem Unit
• Power Adapter
• Quick Installation Guide
• CD-ROM containing the on-line manual and Print Port Driver.
If any of the above items are damaged or missing, please contact your dealer
as soon as possible.
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