Avaya Business Secure Router 222 Configuration - Basics Manuale Utente Scaricare il pdf (Pagina 157)

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Chapter 10 Firewalls 157

Nortel Business Secure Router 222 Configuration — Basics

Introduction to the Business Secure Router firewall

The Business Secure Router firewall is a stateful inspection firewall and is

designed to protect against Denial of Service attacks when activated (in SMT

menu 21.2 or in the WebGUI). The Business Secure Router’s purpose is to allow a

private Local Area Network (LAN) to be securely connected to the Internet. The

Business Secure Router can be used to prevent theft, destruction and modification

of data, as well as log events, which is important to the security of your network.

The Business Secure Router also has packet filtering capabilities.

The Business Secure Router is installed between the LAN and a broadband

modem connecting to the Internet, so that it can allow it to act as a secure gateway

for all data passing between the Internet and the LAN.

The Business Secure Router has one Ethernet WAN port and four Ethernet LAN

port, which are used to physically separate the network into two areas.

• The WAN (Wide Area Network) port attaches to the broadband modem (cable

or ADSL) connecting to the Internet.

• The LAN (Local Area Network) port attaches to a network of computers,

which needs security from the outside world. These computers have access to

Internet services such as e-mail, FTP, and the World Wide Web. However,

inbound access is not allowed unless the remote host is authorized to use a

specific service.

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Avaya Business Secure Router 222 Configuration - Basics Manuale Utente Pagina 157

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