3Com Router 3031, Command Reference Manual

Page: 106 / 838

106 C
HAPTER
2: S
YSTEM
M
AINTENANCE
& M
ANAGEMENT
C
OMMANDS
View
System view
Parameter
query: Query authority is limited.
synchronization: Only the server is permitted to access.
server: Allows the server to perform access and query.
peer: Absolute access.
acl-number: IP address access list number in the range of 1 to 99.
Description
Using the ntp-service access command, you can set the access control authority of
the local device services. Using the undo ntp-service access command, you can
remove the access control authority that has been set.
By default, there is no access authority.
This command is used to set the access authority of the NTP service of the local
device. A security approach of minimum authority is provided in this manual. The
more secure approach is to perform ID authentication. When there is an access
request, this command can be used to make the matches in sequence in a way of
from the minimum access authority to the maximum authority. All matches are
based on the first match. The match order is peer, server, synchronization, query.
Example
Enable the peer in No.76 access list to perform time request, query control and
time synchronization on the local device.
[3Com] ntp-service access peer 76
Enable the peer in No.28 access list to perform time request, query control on the
local device.
[3Com] ntp-service access server 28
4.1.6
ntp-service authentication enable
Syntax
ntp-service authentication enable
undo ntp-service authentication enable
View
System view