Command Reference Guide

238 ● ntp-service access 3Com Router 5000 Family and Router 6000 Family
Command Reference
ntp-service access
Purpose Use the ntp-service access command to control access to the NTP service on
the local device.
Use the undo ntp-service access command to cancel the limit on the access
right.
Syntax ntp-service access { query | synchronization | server | peer }
acl-number
undo ntp-service access { query | synchronization | server | peer }
Parameters query
Query right.
synchronization
access to the server is permitted.
server
Both access to the server and query are allowed.
peer
Full access right.
acl-number
IP ACL number. Valid values are 2000 to 2999.
Default By default, no access right is configured.
Example Enable the peer in ACL 76 to perform time request, query control and time
synchronization on the local device.
[3Com] ntp-service access peer 76
Enable the peer in ACL 28 to perform time request, query control on the local device.
[3Com] ntp-service access server 28
View This command can be used in the following views:
■ System view
Description You can control access to the NTP service on the local device with this command.
Each time the system receives a request, it compares the request against the access
control restrictions from least to maximum: peer, server, synchronization, query.
For protection more secure, you need to configure identification authentication.