Avaya manual Functional overview, Typical SG203/SG208 security gateway installation

Avaya SG203/SG208 Security Gateway Hardware Installation Guide

Figure 1 Typical SG203/SG208 security gateway installation

Functional overview

The SG203 and SG208 security gateways are dedicated hardware-based network security devices designed to provide overlay security services on an IP data network. The security gateway sits behind an edge router and has auto-detecting ethernet interfaces on the public and private ports.

The security gateway’s primary function is to perform IPSec and firewall security services to protect enterprise networks and to secure data being sent over shared IP networks. The security gateway establishes an Internet Key Exchange (IKE) protocol session with its IPSec peer to perform an authentication and to negotiate the security associations (SAs) that are used to secure the session. Once the successful

10 Introduction March 2004