User's Manual
270
Document #: LTRT-23510
MP-26x/MP-27x Multimedia Home Gateway
To add a new NAT/NAPT rule:
a.
In the 'NAT/NAPT Rule Sets' section, click the
New Entry
link; the 'Add
NAT/NAPT Rule' screen appears.
Figure
14-23: Adding NAT/NAPT Rule
This screen is divided into two main sections: 'Matching' and 'Operation'. The
'Matching' section defines the LAN addresses to be translated to the external
addresses, which are defined in the 'Operation' section.
3.
'Matching' section (define characteristics of the packets matching the rule):
a.
Source Address:
source address of packets sent or received by the device. You
can select the computer or group of computers on which you would like to apply
the rule. To apply the rule on all the LAN hosts, select 'Any' . If you would like to
add a new address, select the 'User Defined'. This commences a sequence to
add a new Network Object, representing the new host.
b.
Destination Address:
destination address of packets sent or received by the
device. This address can be configured in the same manner as the source
address. This entry enables further filtration of the packets.
c.
Protocol:
specifies a traffic protocol. Selecting the 'Show All Services' option
expands the list of available protocols. Select a protocol or add a new one using
the 'User Defined' option. This commences a sequence that adds a new Service,
representing the protocol. Using a protocol requires observing the relationship
between a client and a server to distinguish between the source and destination
ports.
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