Create NTPv4 Restrict Entries
Before you begin
You must enable NTPv4 server master mode. For more information, see Configure NTP Globally.
About this task
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.
Procedure
- In the navigation pane, expand .
- Select Restrict.
- Select the Restrict Info tab.
- Select Insert.
- In RowIndex, type a value.
- Select the IP address type.
- Type the IPv4 or IPv6 address.
- Type the restrict mask value.
- Select 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. |