Nokia 5500 Sport, Руководство пользователя

Страница: 182 / 232

T o o l s
62
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.
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.
View certificate details and check
authenticity
You can only be sure of the correct
identity of a server when the
signature and the period of validity
of a server certificate have been
checked.
The phone notifies you if the identity
of the server is not authentic or if
you do not have the correct security
certificate in your phone.
To check certificate details, scroll to
a certificate, and select
Options >
Certificate details . While opening
the certificate details, the phone
checks the validity of the certificate,
and one of the following notes may
appear:
Expired certificate — The validity
period has ended for the selected
certificate.
Certificate not valid yet — The
validity period has not yet begun for
the selected certificate.
Certificate corrupted — The
certificate cannot be used. Contact
the certificate issuer.
Certificate not trusted — You have
not set any application to use the
certificate.
9249411_5500 Sport_2_en_zh.fm Page 62 Friday, June 30, 2006 4:13 PM