Справочное Руководство для Netopia r6100

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1-to-1 static NAT mapping.

An internal private address is permanently mapped to an external address. TCP and UDP por t addresses 
are not altered.

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Multiple Many-to-1 PAT mappings on a single inter face.

PAT addresses may be assigned to specific private address subnets. Unlike pre-4.4 NAT, not all internal 
machines need to be included on a PAT mapping list. 

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Coexistent mapped and unmapped traffic on a public inter face.

If the router's IP address is not included in a NAT list, it will be invisible to the external network.

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Mapped ser vices (expor ts) may use multiple public addresses.

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NAT maps per WAN inter face, similar to the filter rules.

In addition, the current firmware version (4.8) suppor ts the following features:

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NetBIOS Datagram service – NetBIOS datagram ser vice is transparently mapped so that the domain login 
ser vice will be available. It is possible to browse a remote network from behind NAT if the remote network 
has an NT ser ver and domain login. The resources of the host behind NAT will not be available to the 
remote network.

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Arbitrary IP protocol pass-through for Static and Dynamic NAT addresses – All IP protocols are passed 
through the Static and Dynamic NAT mappings.

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Unmapped IP address support – IP addresses can be passed through the router unmapped. The 
(un)mapping is indicated by a Static map with the Public range and Private map addresses equal to each 
other. The unmapped addresses function as though they are routed without NAT applied.

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QuickTime 4 (RTP and RTSP) support – Transparent suppor t for QuickTime™ 4 and RealAudio® native 
streaming protocols has been added. Multiple streams and multiple hosts are suppor ted.

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Transparent NetMeeting Gateway – A single NetMeeting® session at a time can be suppor ted.

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Default service export is no longer necessary – Although the Easy Ser vers list is created by default, it 
does not contain any entries. Creating a ser ver list no longer adds a default entr y for the router. 
Additionally, all such entries are removed by the upgrade to version 4.8. The ser vice expor ts are added to 
the end of the list (similar to NAT rules) rather than to the beginning as in firmware versions earlier than 
4.8.

MultiNat suppor ts the following IP protocols:

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PAT: TCP/UDP traffic which does not carr y source or destination IP addresses or por ts in the data stream 
(i.e., HTTP, Telnet, ‘r’ commands, tftp, NFS, NTP, SMTP, NNTP, etc.).

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Static NAT: All IP protocol traffic which does not carr y or other wise rely on the source or destination IP 
addresses in the data stream.

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Dynamic NAT: All IP protocol traffic which does not carr y or other wise rely on the source or destination IP 
addresses in the data stream.