How to Configure NTP Access Control Authority on Huawei S2700?

Questions:
How to configure NTP Access Control Authority on Huawei Quidway S2700 Quidway Switch?

Answer:
Procedure
Run:system-view,The system view is displayed.
Run:acl acl-number,A basic ACL is created.
Run:rule [ rule-id ] { deny | permit } [ source { source-ip-address source-wildcard | any } ],An ACL rule is configured.
Run:quit,Return to the system view.
Run:ntp-service access { peer | query | server | synchronization } acl-number,The access control authority of the NTP service is configured.By default, no access control authority is set.

 NOTE:
Check the configuration of the ACL rule before configuring the NTP access control authority in the ACL. When the ACL rule is permit, the peer device with the source IP address specified in this rule can access the NTP service on the local device. The access right of the peer device is configured using the ntp-service access command. When the ACL rule is deny, the peer device with the source IP address specified in this rule cannot access the NTP service on the local device.

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