3Com 5500G-EI - Ntp-Service Access; Ntp-Service Authentication Enable

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.
<SW5500>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.
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]ntp-service access synchronization 2028
ntp-service
authentication enable
Syntax
ntp-service authentication enable
undo ntp-service authentication enable
View
System view