Supported Traffic - Netopia R6100 Reference Manual

11-6 User's Reference Guide
1-to-1 static NAT mapping.
An internal private address is permanently mapped to an external address. TCP and UDP port addresses
are not altered.
Multiple Many-to-1 PAT mappings on a single interface.
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.
Coexistent mapped and unmapped traffic on a public interface.
If the router's IP address is not included in a NAT list, it will be invisible to the external network.
Mapped services (exports) may use multiple public addresses.
NAT maps per WAN interface, similar to the filter rules.
In addition, the current firmware version (4.8) supports the following features:
NetBIOS Datagram service – NetBIOS datagram service is transparently mapped so that the domain login
service will be available. It is possible to browse a remote network from behind NAT if the remote network
has an NT server and domain login. The resources of the host behind NAT will not be available to the
remote network.
Arbitrary IP protocol pass-through for Static and Dynamic NAT addresses – All IP protocols are passed
through the Static and Dynamic NAT mappings.
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.
QuickTime 4 (RTP and RTSP) support – Transparent support for QuickTime™ 4 and RealAudio® native
streaming protocols has been added. Multiple streams and multiple hosts are supported.
Transparent NetMeeting Gateway – A single NetMeeting® session at a time can be supported.
Default service export is no longer necessary – Although the Easy Servers list is created by default, it
does not contain any entries. Creating a server list no longer adds a default entry for the router.
Additionally, all such entries are removed by the upgrade to version 4.8. The service exports 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.
Supported traffic
MultiNat supports the following IP protocols:
PAT: TCP/UDP traffic which does not carry source or destination IP addresses or ports in the data stream
(i.e., HTTP, Telnet, 'r' commands, tftp, NFS, NTP, SMTP, NNTP, etc.).
Static NAT: All IP protocol traffic which does not carry or otherwise rely on the source or destination IP
addresses in the data stream.
Dynamic NAT: All IP protocol traffic which does not carry or otherwise rely on the source or destination IP
addresses in the data stream.