Cisco Systems VPN 3002 manual Certificate Fields, 12-51, Content

Chapter 12 Administration

Administration Certificate Management View

Certificate Fields

A certificate contains some or all of the following fields:

Field	Content
Subject	The person or system that uses the certificate. For a CA root certificate, the
	Subject and Issuer are the same.
Issuer	The CA or other entity (jurisdiction) that issued the certificate.
	Subject and Issuer consist of a specific-to-general identification hierarchy: CN,
	OU, O, L, SP, and C. These labels and acronyms conform to X.520
	terminology, and they echo the fields on the Administration Certificate
	Management Enrollment screen.
CN	Common Name: the name of a person, system, or other entity. This is the
	lowest (most specific) level in the identification hierarchy.
	For the VPN 3002 self-signed SSL certificate, the CN is the IP address on the
	Ethernet 1 (Private) interface at the time the certificate is generated. SSL
	compares this CN with the address you use to connect to the VPN 3002 via
	HTTPS, as part of its validation.
OU	Organizational Unit: the subgroup within the organization (O).
O	Organization: the name of the company, institution, agency, association, or
	other entity.
L	Locality: the city or town where the organization is located.
SP	State/Province: the state or province where the organization is located.
C	Country: the two-letter country abbreviation. These codes conform to ISO
	3166 country abbreviations.
Serial Number	The serial number of the certificate. Each certificate issued by a CA must be
	unique among all certificates issued by that CA. CRL checking uses this serial
	number.
Signing Algorithm	The cryptographic algorithm that the CA or other issuer used to sign this
	certificate.
Public Key Type	The algorithm and size of the certified public key.
Certificate Usage	The purpose of the key contained in the certificate, for example: digital
	signature, certificate signing, nonrepudiation, key or data encipherment, etc.
MD5 Thumbprint	A 128-bit MD5 hash of the complete certificate contents, shown as a 16-byte
	string. This value is unique for every certificate, and it positively identifies the
	certificate.
	If you question a root certificate’s authenticity, you can check this value with
	the issuer.
	VPN 3002 Hardware Client Reference
OL-1893-01		12-51