NetComm NetComm Gateway Series, Руководство пользователя

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ADSL2+ Modem Router User Guide YML14WN
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NAT
Go to Advanced Setup->NAT to setup the NAT features. Network Address Translation (NAT) allows multiple users at your local site to
access the Internet through a single public IP address or multiple public IP addresses. NAT can also prevent hacker attacks by mapping
local addresses to public addresses for key services such as the Web or FTP.
Virtual Server
Go to Advanced Setup ->NAT -> Virtual Server to set a virtual server (known as Port Mapping).You can configure the router as a virtual
server so that remote users accessing services such as the 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
numbers), the router redirects the external service request to the appropriate server (located at another internal IP address). For some
applications, you need to assign a set or a range of ports (example 4000-5000) to a specified local machine to route the packets. The
router allows the user to configure the needed port mappings to suit such applications.