3Com OfficeConnect User Manual page 45

Setting up One-to-Many NAT
Figure 39 Network Address Translation Screen
This is very easy to set up and is the Router's default mode. It
works with any IP Allocation Mode and will map all the
addresses on your LAN to the Internet address of your Router. To
set up One-to-Many NAT:
1 Select One-to-Many NAT from the NAT Mode drop-down box.
Click Apply to save your changes.
2
Setting up One-to-One NAT
The following criteria must be met to be able to use One-to-One
NAT:
You must have a static Internet IP address for every computer
on your network plus one for the Router itself.
The addresses must be in one continuous block in the same
subnet
You must have selected Static IP Address as your IP Allocation
Mode and have given your Router the first of the Internet
addresses allocated by your ISP.
Figure 40 One-to-One NAT Screen
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