Epson WorkForce Pro WF-C879R - Using a Digital Certificate

Using a Digital Certicate
About Digital Certication
❏ CA-signed
Certicate
is
is a
certicate
signed by the CA
(Certicate
Authority.) You can obtain it to apply to the
Certicate
Authority. is certicate certies the existence of the printer is and used for SSL/TLS communication so that
you can ensure the safety of data communication.
When it is used for SSL/TLS communication, it is used as a server certicate.
When it is set to IPsec/IP Filtering, IEEE802.1x communication, or S/MIME, it is used as a client certicate.
❏ CA
Certicate
is
is a
certicate
that is in chain of the CA-signed
Certicate
, also called the intermediate CA
certicate.
It is
used by the web browser to validate the path of the printer's certicate when accessing the server of the other
party or Web Cong.
For the CA Certicate, set when to validate the path of server certicate accessing from the printer. For the
printer, set to certify the path of the CA-signed
Certicate
for SSL/TLS connection.
You c a n o bt a in the C A
certicate
of the printer from the
Certication
Authority where the CA
certicate
is
issued.
Also, you can obtain the CA certicate used to validate the server of the other party from the Certication
Authority that issued the CA-signed Certicate of the other server.
❏ Self-signed
Certicate
is
is a
certicate
that the printer signs and issues itself. It is also called the root
certicate.
Because the issuer
certies itself, it is not reliable and cannot prevent impersonation.
❏ When using for SSL/TLS communication
Use it when making the security setting and performing simple SSL/TLS communication without the CA-
signed Certicate.
If you use this certicate for an SSL/TLS communication, a security alert may be displayed on a web browser
because the certicate is not registered on a web browser.
❏ When setting to S/MIME
You can also use a self-signed certicate instead of a CA-signed certicate. You can use S/MIME functions
without the cost of obtaining a CA-signed certicate, for example in a network environment that does not
have an external connection (Internet connection), such as an enterprise network. However, it is
recommended to use a CA-signed certicate when using external connections because a self-signed
certicate is low-security.
Related Information
& “Conguring a CA-signed Certicate” on page 534
& “Updating a Self-signed Certicate” on page 538
& “Conguring a CA Certicate” on page 539
Administrator Information > Advanced Security Settings > Using a Digital Certicate
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