3Com 5500G-EI Command Reference Guide - Page 504

504 CHAPTER 12: USING SYSTEM MANAGEMENT COMMANDS server 127.0.0.1,stratum 8, offset 0.000000, synch distance 0.00000 refid 127.127.1.0 ntp-service access Syntax ntp-service access { query | synchronization | server | peer } acl-number undo ntp-service access { query | synchronization | server | peer } View System view. Parameters query: Allow to control query authority. synchronization: Only allow the server to access. server: Allow query to server and access. peer: Full access authority. acl-number: IP address list number, ranging from 2000 to 2999. Description Use the ntp-service access command to set the authority to access the local equipment. Use the undo ntp-service access command to cancel the access authority settings. By default, there is no limit to the access. Set authority to access the NTP services on a local Switch. This is a basic and brief security measure, compared to authentication. An access request will be matched with peer, serve, serve only, and query only in an ascending order of the limitation. The first matched authority will be given. Example Give the authority of time request, query control and synchronization with the local equipment to the peer in ACL 2076. system-view System View: return to User View with Ctrl+Z. [SW5500]ntp-service access peer 2076 Give the authority of time request and query control of the local equipment to the peer in ACL 2028. system-view System View: return to User View with Ctrl+Z. [SW5500]ntp-service access synchronization 2028 ntp-service Syntax authentication enable ntp-service authentication enable undo ntp-service authentication enable View System view