Nokia 6630 User Guide - Page 103
Certif. management, Closed user group, Confirm SIM services - software
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Tools Closed user group (network service) - To specify a group of people to whom you can call and who can call you. Confirm SIM services (network service) - To set the phone to display confirmation messages when you are using a SIM card service. Certif. management Digital certificates do not guarantee safety; they are used to verify the origins of software. In the Certificate management main view, you can see a list of authority certificates that have been stored in your phone. Press to see a list of personal certificates, if available. Digital certificates should be used if you want to connect to an online bank or another site or remote server for actions that involve transferring confidential information. They should also be used if you want to reduce the risk of viruses or other 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 phone are correct. Viewing certificate details - checking 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. You will be notified on the phone display if the identity of the server is not authentic or if you do not have the correct security certificate in your phone. Glossary: Digital certificates are used to verify the origin of the XHTML or WML pages and installed software. However, they can only be trusted if the origin of the certificate is known to be authentic. 103 Copyright © 2005 Nokia. All rights reserved.