Managing Digital Certificates - NETGEAR STM150 - ProSecure Web And Email Threat Management Appliance Reference Manual

Table 22. System Date and Time Settings (Continued)
Setting
Use Custom NTP
Servers
Manually Enter the
Date and Time
Time Zone
From the drop-down list, select the local time zone in which the STM operates. The correct time zone is
required in order for scheduling to work correctly. You do not need to configure daylight savings time, which
is applied automatically when applicable. GMT (Greenwich Mean Time) is the default setting.
Note: When you select a time zone that is not associated with a location such as (GMT -08:00) GMT-8,
daylight savings time is automatically disabled. When you select a time zone that is associated with a
location such as (GMT -08:00) Pacific Time ( US & Canada), daylight savings time is automatically enabled.
3. Click Apply to save your settings. Changing the time zone requires the STM to restart.
Note: If you select the default NTP servers or if you enter a custom server
FQDN, the STM determines the IP address of the NTP server by
performing a DNS lookup. You need to configure a DNS server
address on the Network Settings screen (see
Settings

Managing Digital Certificates

The STM uses digital certificates (also known as X509 certificates) for secure Web access
connections over HTTPS (that is, SSL VPN connections).
Digital certificates can be either self-signed or can be issued by Certification Authorities
(CAs) such as an internal Windows server or an external organizations such as Verisign or
Thawte. On the STM, the uploaded digital certificate is checked for validity and purpose. The
digital certificate is accepted when it passes the validity test and the purpose matches its use.
76 | Chapter 3. Performing Network and System Management
ProSecure Web/Email Security Threat Management (STM) Appliance
Description (or Subfield and Description)
The STM regularly updates its RTC by contacting one of the two NTP servers (primary
and backup), both of which you need to specify in the fields that become available
when you select this option.
Note: If you select this option but leave either the Server 1 or Server 2 field blank,
both fields are automatically set to the default NETGEAR NTP servers.
Note: A list of public NTP servers is available at
http://support.ntp.org/bin/view/Servers/WebHome.
Server 1 Name / Enter the IP address or host name the primary NTP server.
IP Address
Server 2 Name / Enter the IP address or host name the secondary NTP server.
IP Address
Date Enter the date in the yyyy-mm-dd (year-month-date) format.
Time Enter the time in the hh-mm-ss (hour-minutes-seconds) format.
on page 52) before the STM can perform this lookup.
Configuring Network