Chapter 3 – RouteFinder Software Operation
Multi-Tech RouteFinder RF650VPN User Guide
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Masquerading
From Network|Masquerading you define which networks or network groups are masked onto which
network cards. With the Masquerading function, you can hide internal IP addresses and network
information from the outside network. Here, you determine which networks/network groups are masked
onto which network cards. Curved brackets { } indicate network groups. The network card is usually the
external network card. This is called "dynamic masquerading".
Masquerading is a special case of SNAT. The differences between SNAT and Masquerading are:
·
With masquerading you only enter one source network. All services (ports) are automatically included
in the translation.
·
The translation only takes place if the packet is sent via the indicated network interface.
The address of this interface is used as the new source of the data packets.
This makes Masquerading especially useful for connecting private networks to the Internet.
Using the select menus, determine which network is to be masqueraded on which network interface.
Usually you will select the external network (Eth1) card (this is considered “dynamic masquerading”).
Define Masquerading
1.
Open the Masquerading menu in the Network directory.
2.
Select a defined Network or a Network Group from the select menu on the left.
3.
Mark the network card in the select menu on the right.
4.
Confirm your entries by clicking the
Add
button. After a successful definition, a select menu with the
corresponding settings is created. Subsequently you are offered further functions (i.e.,
Edit
or
Delete
Networks or Network Groups).
