Nortel Networks NN46120-104 User Manual

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Glossary

Cluster (of VPN Gateways)

A cluster is a group of VPN Gateways that share the same
configuration parameters. There can be more than one NVG
cluster in the network, each with its own set of parameters and
services to be used with different real servers. Every cluster has a
Management IP address (MIP), which is an IP alias to one of the
master VPN Gateways in the cluster.

Console Connection

A connection to the VPN Gateway established through the
console port.

CRL (Certificate Revocation List)

A list containing the serial numbers of revoked client certificates.
Each CA issues and maintains their own CRLs. If you generate
client certificates on the VPN Gateway, you can also create your
own CRL.

CSR (Certificate Signing Request)

A request for a digital certificate, sent to a CA. On the VPN
Gateway, you can generate a CSR from the command line
interface by using the

request

command.

DCE (Data Communicatons Equipment)

A device that communicates with a Data Terminal Equipment
(DTE) in RS-232C communications.

DER (Distinguished Encoding Rules)

A process for unambiguously converting an object specified in
ASN.1 (such as an X.509 certificate, for example) into binary
values for storage or transmission on a network.

Digital Certificate

The digital equivalent of an ID card used in conjunction with
a public key encryption system. Digital certificates are issued
by trusted third parties known as certificate authorities (CAs),
after verifying that a public key belongs to a certain owner. The
certification process varies depending on the CA and the level of
certification.

Digital Signature

A digital guarantee that a document has not been altered, as if it
were carried in an electronically-sealed envelope. The "signature"
is an encrypted digest of the text that is sent with the text

Nortel VPN Gateway

User Guide

NN46120-104

02.01

Standard

14 April 2008