Alcatel-Lucent OmniAccess 5740 - Three Zone Firewall Example

Zone Configuration
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Alcatel-Lucent
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OmniAccess 5740 Unified Services Gateway CLI Configuration Guide
THREE ZONE FIREWALL EXAMPLE
SCENARIO
1. The network has a network of nodes, a mail server, a web server, and access to
the internet using a leased line with a static IP.
2. The LAN nodes are designated and placed in the trusted zone.
3. The mail server and web server need to be accessed from the Internet and the
local LAN. Since these servers are exposed in some form to the Internet, they are
placed in the DMZ.
4. All traffic going out to the Internet is subject to NAT.
Figure 24: Three Zone Firewall Network Topology