D-Link DGS-3630-28SC [112/742] Ntp access group settings

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide

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Parameter Description

Prefer

Select whether or not this entry will be the preferred peer for synchronization.

Options to choose from are True and False.

Click the Apply button to accept the changes made.

Access Control List (ACL) containing address/match entries sorted first by increasing address values and then by

increasing mask values. A match occurs when the bitwise AND of the mask and the packet source address is equal to

the bitwise AND of the mask and address in the list. The list is searched in order with the last match found defining the

restriction flags associated with the entry.

To view the following window, click Management > NTP > NTP Access Group Settings, as shown below:

Figure 4-74 NTP Access Group Settings Window

The fields that can be configured are described below:

Select and enter the host IPv4 address here.

Netmask

Enter the IPv4 netmask of the host network here.

Select and enter the host IPv6 address here.

IPv6 Mask

Enter the IPv6 prefix length of the host network here.

Ignore

Select this option to deny all packets, including NTP control queries.

Select this option to deny packets that might mobilize an association unless