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Nokia 6651 User Guide 94 Copyright © 2004 Nokia
Security features for browser connections
Security features may be required for some services, such as banking
services. For such connections you need security certificates. For more
information, contact your service provider.
Important: Note that 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.
CERTIFICATES
There are two kinds of certificates: server certificates and authority
certificates.
• Server certificates
The phone uses a server certificate to create a connection with
improved security to the service provider. The phone receives the
server certificate from the service provider before the connection is
established and its validity is checked using the authority certificates
saved in the phone. Server certificates are not saved. The phone
indicates if the identity of the Internet server cannot be verified, if the
Internet server certificate is not authentic or if you do not have the
correct authority certificate in your phone.
The security indicator is displayed during a connection, if the data
transmission between the phone and the Internet server is encrypted.
The security icon does not indicate that the data transmission
between the gateway and the content server (or place where the
requested resource is stored) is secure. The service provider secures
the data transmission between the gateway and the content server.