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The NetScreen-10/100 device supports three operational modes: Transparent
mode, NAT (Network Address Translation) mode, and Route mode. This section
provides an overview of each mode and the required steps to perform an initial
configuration.
For further configuration examples and detail, see the NetScreen Concepts &
Examples ScreenOS Reference Guide.
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In Transparent mode, the NetScreen device filters packets traversing the firewall
without modifying any of the source or destination information in the IP packet
header. Because it does not translate addresses, the IP addresses on the protected
network must be valid, routable addresses on the Untrusted network
1
, which
might be the Internet. In Transparent mode, the IP addresses for the Trusted and
Untrusted interfaces are set at 0.0.0.0, making the presence of the NetScreen
device invisible, or “transparent,” to users.
1. If the router on the Untrusted side performs NAT, then the addresses on the Trusted side can be
private IP addresses.
Public Address
Space
Router
Summary of Contents for NetScreen-10 Series
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