Nokia 7900 Prism User Guide - Page 48
Security settings, Certificates, Cookies and cache
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Web Security settings Certificates To view the list of the authority or user certificates downloaded into your phone, select Menu > Settings > Security > Authority certificates or User certificates. is displayed during a connection, if the data transmission between the phone and the content server is encrypted. 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. There are three kinds of certificates: server certificates, authority certificates, and user certificates. You may receive these certificates from your service provider. Authority certificates and user certificates may also be saved in the security module by the service provider. 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. Cookies and cache A cookie is data that a site saves in the cache memory of your phone. Cookies are saved until you clear the cache memory. While browsing, select Options > Other options > Security > Cookie settings; or in the standby mode, select Menu > Web > Settings > Security settings > Cookies. To allow or prevent the phone from receiving cookies, select Allow or Reject. A cache is a memory location that is used to store data temporarily. If you have tried to access or have accessed confidential information requiring passwords, empty the cache after each use. The information or services you have accessed are stored in the cache. To empty the cache, while browsing, select Options > Other options > Clear Copyright © 2007 Nokia. All rights reserved. 47