Alcatel-Lucent Extended Communication Server Installation & Configuration Manual page 25

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After reading this chapter, you will be able to insert the Extended Communication Server in the
customer network and access the Internet from the administration interface.
4.1 Principles
The three network interfaces and the comprehensive set of available configuration parameters
the Extended Communication Server provides allow you to insert it in any network
architecture.
However, this document does not intend to consider all possible architectures. It aims at
explaining you the basics, while giving you some useful examples corresponding to most usual
situations.
Below is an example of the way a Extended Communication Server can be inserted in a
standard network topology:
- The LAN (Local Area Network) is connected to interface eth0 (LAN1).
- The Internet access is connected to interface eth1.
- The DMZ (Demilitarized Zone) is connected to interface eth2. A DMZ is a LAN subnetwork
that contains the external services accessible from the Internet, such as a Web server or
an FTP server. Using a DMZ for external services, facilitates the security management.
This chapter details the main Service management > Network service management
submenus you should deal with in the following order:
Figure 4.1: A Standard Network Topology
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