Nokia E90 User Manual

Also see for E90 Communicator: User guide Specification sheet User guide Brochure User guide

Contents

Nokia E90 User Manual Manual pdf 76 page image

19. SecurityFixed dialingSelect > Contacts > Options > SIM contacts > Fixed dial contacts.With the fixed dialing service, you can restrict calls from your device to certain phone numbers. Not all SIM cards support thefixed dialing service. Contact your service provider for more information.When fixed dialing is activated, calls may be possible to the official emergency number programmed into your device.1. To restrict calls from your device, select Options > New SIM contact and enter the contact name and phone number to thelist of numbers to which calls are allowed, or select Add from Contacts to copy the contact from Contacts. To restrict calls bya country prefix, enter the country prefix in the list of numbers. All phone numbers to which calls are allowed must start withthis country prefix.2. Select Options > Activate fixed dialling. You need your PIN2 code to activate and deactivate fixed dialing or edit your fixeddialing contacts. Contact your service provider if you do not have the code. To cancel the service, select Options > Deactivatefixed dialling.Tip: To send text messages to the SIM contacts while the fixed dialing service is active, you need to add the text messagecenter number to the fixed dialing list.Certificate managerImportant: Even if the use of certificates makes the risks involved in remote connections and software installationconsiderably smaller, they must be used correctly in order to benefit from increased security. The existence of acertificate does not offer any protection by itself; the certificate manager must contain correct, authentic, or trustedcertificates 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 yourdevice are correct.Before changing any certificate settings, you must make sure that you really trust the owner of the certificate and thatthe certificate really belongs to the listed owner.Select > Tools > Settings > General > Security > Certificate management.Digital certificates are used to verify the origins of software but do not guarantee safety. There are three different types ofcertificates: authority certificates, personal certificates, and server certificates. During a secure connection, a server may send aserver certificate to your device. Upon receipt, it is checked through an authority certificate stored on your device. You receivenotification if the identity of the server is not authentic or if you do not have the correct certificate in your device.Download a certificate from a web site, or receive a certificate as an e-mail attachment, or as a message sent through a Bluetoothor infrared connection. Certificates should be used when you connect to an online bank or a remote server to transfer confidentialinformation. They should also be used if you want to reduce the risk of viruses or other malicious software, and to check theauthenticity of software when you download and install software to your device.Tip: When you add a new certificate, check its authenticity.Certificate trust settingsTrusting a certificate means that you authorize it to verify web pages, e-mail servers, software packages, and other data. Onlytrusted certificates can be used to verify services and software.To change trust settings, select a certificate and Options > Trust settings. Select an application field and Yes or No. You cannotchange the trust settings of a personal certificate.Depending on the certificate, a list of applications that can use the certificate is displayed:• Symbian installation — New Symbian operating system application.• Internet — E-mail and graphics.• App. installation — New Java™ application.• Online certif. check — Online certificate status protocol.View certificate detailsYou can only be sure of the correct identity of a server when the signature and the validity period of a server certificate havebeen checked.To view certificate details, select View details.One of the following notes may appear:© 2007 Nokia. All rights reserved. 76