Chapter 5
Expert Configuration
E-DOC-CTC-20050429-0104 v1.0
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5.3.6 NAT
Overview The NAT menu consists of following sections:
Interfaces
Mappings
Templates
Interfaces The Interface page allows you to enable/disable NAPT on a specific interface.
Proceed as follows to enable/disable an interface:
1 Select the interface that has to be enabled/disabled
2 Click Save All to make the settings permanent.
Mappings The Mappings page allows you to map one or more private IP addresses into one or
more public IP address on a specific interface.
Depending on your needs following fields are available:
Interface:
The name of the IP interface that needs to be NAT-ed.
Protocol:
The IP protocol on which address translation has to be applied. This allows the
SpeedTouch™ to link specific traffic (protocol dependent) to a chosen private
host.
Outside address:
The outside (typically public) IP address(es).
Inside address:
The inside (typically private) IP address(es).
Access list:
You can use the access list to define the address(es) that are allowed to use the
outbound connections.
Foreign address:
Foreign address is to define the address(es) that are allowed to use the inbound
connections.
Flags
Description
If you selected NAPT, you will have to specify a port range for the inside and
outside address.
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