Specifications

Network and System Management
353
ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
Resolve IPv6 address
for servers
Select this check box to force the use of IPv6 addresses and FQDN (domain
name) resolution in the Server 1 Name / IP Address and Server 2 Name / IP
Address fields when you have selected the Use Custom NTP Servers radio
button.
Select NTP Mode In all three NTP modes, the VPN firewall functions both as a client and a server.
The VPN firewall synchronizes its clock with the specified NTP server or
servers and provides time service to clients. From the drop-down list, select the
NTP mode:
• Authoritative Mode. The VPN firewall synchronizes its clock with the
specified NTP server or servers on the Internet. If external servers are
unreachable, the VPN firewall’s RTC provides time service to clients. In
authoritative mode, you can enter a stratum value and set the date and
time manually.
• Sync to NTP Servers on Internet. The VPN
firewall synchronizes its clock
with the specified NTP server or servers on the Internet. If external servers
are unreachable, the VPN firewall does not use its RTC.
• Sync to NTP Servers on VPN. The
VPN
firewall synchronizes its clock
with the specified NTP server on the VPN. If the server is unreachable, the
VPN firewall does not use its RTC. You need to select a VPN policy that
enables the VPN firewall to contact the NTP server on the VPN.
Select Stratum In authoritative mode, enter a stratum value,
which indicates the distance from a reference
clock. The default value is 10, which specifies an
unsynchronized local clock and causes NTP to
use the VPN firewall’s RTC when the specified
NTP server is not available.
Set date and time manually This is an optional setting that is available in
authoritative mode. Select the check box to
unmask the time (hour, minute, second), Day,
Month, and Year fields. Enter the date and time.
Select VPN Policy When the VPN firewall is configured to
synchronize to an NTP server on the VPN,
select the VPN policy from the drop-down list.
For information about configuring VPN policies,
see Manage VPN Policies on page 238.
Table 87. Time Zone screen settings (continued)
Setting Description