Creating NTPv4 Restrict Entries
Note
DEMO FEATURE - NTPv4 Restrict is a demonstration feature on some products. Demonstration features are provided for testing purposes. Demonstration features are for lab use only and are not for use in a production environment. For more information on feature support, see VOSS Feature Support Matrix.
Perform the following procedure to configure the NTP restrict capability for a specific IPv4 or IPv6 address(es), which means the switch permits traffic flow from the specified IP address only. By default the NTP restrict capability is disabled.
Note
-
You can configure a maximum of 128 NTP Restrict entries (IPv4 or IPv6 addresses).
-
0.0.0.0/0 or ::/0 NTP restrict entries are equivalent to no NTP restrict rules configured.
Before you begin
You must enable NTPv4 server master mode. For more information, see Configure NTP Globally.
Procedure
- In the Navigation pane, expand .
- Click Restrict.
- Click the Restrict Info tab.
- Click Insert.
- In the RowIndex field, enter a value.
- Select the IP address type.
- Enter the IPv4 or IPv6 address.
- Enter the restrict mask value.
- Click Insert.
Restrict Info Field Descriptions
Use data in the following table to use the Restrict Info tab.
|
Name |
Description |
|---|---|
|
RowIndex |
Specifies the NTP Restrict entry. |
|
AddressType |
Specifies the NTP Restrict address type. |
|
RestrictAddress |
Specifies the NTP address to be restricted. |
|
RestrictMask |
Specifies the prefix length of the IPv4 or IPv6 NTP address to be restricted. |