Nokia 002F4W8 - Manual (Page 165)

malicious software and be sure of the authenticity
of software when downloading and installing
software.
Important: Even if the use of certificates
makes the risks involved in remote connections and
software installation considerably smaller, they
must be used correctly in order to benefit from
increased security. The existence of a certificate
does not offer any protection by itself; the
certificate manager must contain correct,
authentic, or trusted certificates for increased
security to be available. Certificates have a
restricted lifetime. If "Expired certificate" or
"Certificate not valid yet" is shown, even if the
certificate should be valid, check that the current
date and time in your device are correct.
View certificate details—check authenticity
You can only be sure of the correct identity of a
server when the signature and the validity period
of a server certificate have been checked.
You are notified if the identity of the server is not
authentic or if you do not have the correct security
certificate in your device.
To check certificate details, scroll to a certificate,
and select Options > Certificate details . The
validity of the certificate is checked, and one of the
following notes may be displayed:
● Certificate not trusted — You have not set any
application to use the certificate.
● Expired certificate — The certificate validity
period has ended.
● Certificate not valid yet — The certificate
validity period has not yet begun.
● Certificate corrupted — The certificate cannot
be used. Contact the certificate issuer.
Change the trust settings
Before changing any certificate settings, you must
make sure that you really trust the owner of the
certificate and that the certificate really belongs to
the listed owner.
Scroll to an authority certificate, and select
Options > Trust settings . Depending on the
certificate, a list of the applications that can use the
selected certificate is shown. For example:
● Symbian installation : Yes — The certificate is
able to certify the origin of a new Symbian
operating system application.
● Internet : Yes — The certificate is able to certify
servers.
● App. installation : Yes — The certificate is able
to certify the origin of a new Java™ application.
Select Options > Edit trust setting to change the
value.
165
Se
ttings