Avaya SG5X manual Security, SG200 security gateway

Avaya SG5, SG5X, & SG200 Security Gateway Hardware Installation Guide

Figure 1 SG200 security gateway

Security

The VSU provides data stream privacy by employing cryptographic algorithms and keys powerful enough for the most sensitive business communications. It supports DES and 3DES encryption, as well as the IKE key management standards.

Data authenticity is assured by using MD5™ or SHA-1 hashing algorithms to reject altered or forged packets. All security mechanisms employed by the security gateway conform to IPsec standards, in order to provide interoperability and broaden the use of VPN technology.

The security gateway also contains a powerful IP packet filtering engine to provide extensive filtering capabilities, essential when you have a full- time connection to the Internet. A rule-based method of packet filtering is used, where the priority of the rule is determined by its position in the list (highest is top priority).

10 Introduction March 2004