Netgear STM150 ProSecure Web and Email Threat Management Appliance Reference Manual
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Chapter 3. Performing Network and System Management
ProSecure Web/Email Security Threat Management (STM) Appliance
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
performing a DNS lookup. You need to configure a DNS server
address on the Network Settings screen (see
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).
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.
(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.
Use Custom NTP
Servers
Servers
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.
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
.
Server 1 Name /
IP Address
IP Address
Enter the IP address or host name the primary NTP server.
Server 2 Name /
IP Address
IP Address
Enter the IP address or host name the secondary NTP server.
Manually Enter the
Date and Time
Date and Time
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.
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.
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.
location such as (GMT -08:00) Pacific Time ( US & Canada), daylight savings time is automatically enabled.
Table 22. System Date and Time Settings (Continued)
Setting
Description (or Subfield and Description)