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Chapter 3. Terminal Menu Operation and Structure
IP/NAT
Write security: 3; Read security: 5
The Express L768 can perform Network Address Translation. This
feature is most widely used when connecting to the Internet. The
Ethernet network can consist of private network numbers. When this
profile is connected, all IP addresses on the Ethernet side are translat-
ed into the one real IP address negotiated with the PPP peer (ISP).
Multiple stations on the Ethernet side can access the Internet simulta-
neously. See the section IP/NAT on page 3-15 for more global options.
Setting this option to On will cause the Express L768 to perform NAT.
In the Off (def) position, the unit will route across the connection nor-
mally.
IP/Route
The IP parameters are configured in this menu. Usually the Express L768
will automatically discover the PPP peer's networks using PPP IPCP and/or
RIP.
Route/IP/Net
Write security: 3; Read security: 5
The PPP peer's IP address or network can be set here, if known. Leav-
ing this at 0.0.0.0 means that the Express L768 will determine the PPP
peer's IP and network using the PPP IPCP.
Route/Netmask
Write security: 3; Read security: 5
This network mask is applied to the IP/NET address for determining
the PPP peer's network. If left as 0.0.0.0, a standard network mask is
used.
Route/Force IP
Write security: 3; Read security: 5
When set to Yes, the Express L768 will force the PPP peer to use the IP
address in the IP/Net for this profile as its WAN IP address. Normally
this is set in the No (def) position.
3-48
Express L768 User Manual
61203192L1-20
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