Avaya Business Secure Router 252 Configuration - Basics Manuel d'utilisateur télécharger pdf (Page 201)

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Chapter 13 VPN 201

Nortel Business Secure Router 252 Configuration — Basics

Security Association

A Security Association (SA) is a contract between two parties indicating which

security parameters, such as keys and algorithms, they use.

Other terminology

Encryption

Encryption is a mathematical operation that transforms data from plaintext

(readable) to ciphertext (scrambled text) using a key. The key and clear text are

processed by the encryption operation, which leads to the data scrambling that

makes encryption secure. Decryption is the opposite of encryption; it is a

mathematical operation that transforms “ciphertext” to plaintext. Decryption also

requires a key.

Figure 63 Encryption and decryption

Table 44 VPN Screens Overview

Screens Description

Summary This screen lists all of your VPN rules.

Contivity Client

Rule Setup

Use these screens to configure simple VPN rules that

have the Business Secure Router operate as a VPN

client.

Branch Office

Rule Setup

Use these screens to manually configure VPN rules

that have the Business Secure Router operate as a

VPN router.

SA Monitor Use this screen to display and manage active VPN

connections.

Global Setting Use this screen to configure the IPSec timer settings.

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