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Services
d. Click again to list additional IP addresses or networks.
To limit access to specified IPv6 addresses and networks:
n
a. Click IPv6 Addresses.
b. For Add Address, click .
c. For Address, enter the IPv6 address or network that can access the device's NTP
d. Click again to list additional IP addresses or networks.
To limit access to hosts connected through a specified interface on the IX20 device:
n
a. Click Interfaces.
b. For Add Interface, click .
c. For Interface, select the appropriate interface from the dropdown.
d. Click again to allow access through additional interfaces.
To limit access based on firewall zones:
n
a. Click Zones.
b. For Add Zone, click .
c. For Zone, select the appropriate firewall zone from the dropdown.
d. Click again to allow access through additional firewall zones.
Note
By default, the access control list for the NTP service is empty, which means that all
downstream hosts connected to the IX20 device can use the NTP service.
6. (Optional) Add upstream NTP servers that the device will use to synchronize its time. The
default setting is time.devicecloud.com.
To change the default value of the NTP server:
n
a. Click NTP servers.
b. For Server, type a new server name.
To add an NTP server:
n
a. Click NTP servers.
b. For Add Server, click .
c. For Server, enter the hostname of the upstream NTP server that the device will use
d. Click to add additional NTP servers. If multiple servers are included, servers are
Note
This list is synchronized with the list of servers included with NTP client configuration,
and changes made to one will be reflected in the other. See
more information about NTP client configuration.
7. (Optional) Configure the system time zone. The default is UTC.
IX20 User Guide
service. Allowed values are:
A single IP address or host name.
l
A network designation in CIDR notation, for example, 2001:db8::/48.
l
any: No limit to IPv6 addresses that can access the NTP service.
l
See
Firewall configuration
to synchronize its time.
tried in the order listed until one succeeds.
for information about firewall zones.
Configure the system time
Network Time Protocol
for
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