Operation Manual

57
Gigaset GS270 / LUG International en / A31008-N1503-R101-1-7619 / settings.fm / 9/11/17
Template Go, Version 1, 01.07.2014 / ModuleVersion 1.0
Security
Device administrators
Device administrators are apps authorised to create a connection to your smartphone and to
exchange data, for synchronisation for example. You can authorise this by setting up an account
hosted by a business service, such as for an email, calendar or business app.
¤ Settings Users – Security Device administrators . . . A list of device
administrators is displayed Tick the checkboxes next to the apps to be allowed as device
administrators
Displaying device administrator information:
¤ Touch and hold a service in the list
Certificates
Digital certificates are used to identify your smartphone in secure network connections. You
require a certificate for VPN or WLAN connections for example, or for authentication with email
servers, browsers or other apps. Some certificates are already stored on your phone by default.
You can install further certificates.
Supported formats:
• DER coded X.509 certificates with file extensions .CRT and .CER.
• X.509 certificates in PKCS#12 keystore files with file extensions .P12 and .PFX. If you install a
certificate from a PKCS#12 keystore file, the corresponding private key certificates or
certification authority (CA) certificates are also installed.
Files with different file extensions cannot be installed. Change the file extension if required.
Managing certificates
¤ Settings Users – Security Trusted credentials
The installed certificates are displayed.
If a certificate is corrupt or you do not trust a certificate, you can disable or delete it.
¤ Tap a certificate . . . Information on the certificate is displayed Scroll down
System certificate: Disable/Enabl
e OK
User certificate: Remove OK . . . T
he certificate is deleted permanently and needs to be
reinstalled if required
If you disable a device administrator, you revoke the permission of associated
services to synchronise data on your phone.
Google services (Gmail, contacts, calendar, etc.) are not treated as device
administrators. Permissions for these services to make changes on the smartphone
are managed from the Google account settings.
System: Contains all certificates issued by a certification authority (CA) that are permanently
installed in the write-protected memory of your phone.
User: Contains all CA certificates you have installed yourself, when installing a client
certificate for example.