HP 680n - JetDirect Print Server Administrator's Manual page 144

Certificates
(Full-featured HP Jetdirect print servers only) This tab provides
access to installation, configuration and management services for
X.509 digital certificates. A digital certificate is an electronic
message typically containing, among other things, a key (a short
string used for encryption and decryption) and a digital signature.
Certificates may be issued and signed by a trusted third party
(commonly called a Certificate Authority, or CA), which may exist
internal or external to the organization. Or certificates may be
"self-signed", which is similar to validating your own identity.
Note
The Certificates page provides the status of the certificates
installed on the HP Jetdirect print server:
G
Jetdirect certificate. The Jetdirect certificate is used to
validate the identity of the Jetdirect device to clients and to
network authentication servers.
By factory default, a self-signed Jetdirect certificate is
preinstalled. For wireless print servers, this allows the embedded
Web server to use HTTPS and appear as a secure site when
initially accessed from your Web browser.
Click View to view the contents of an installed Jetdirect
certificate, or click Configure to update or install a new one. See
Configuring
When installed, a Jetdirect certificate will be saved across a
cold-reset, which is used to restore the print server to
factory-default values.
ENWW
While self-signed certificates are permitted and
allow data encryption, they do not ensure valid
authentication.
Certificates.
Using the Embedded Web Server 144