3com S7906E Guide De Référence

 

1-5 

ntp-service access { peer | query | server | synchronization } acl-number 

undo ntp-service access { peer | query | server | synchronization } 

System view 

2: System level 

peer: Specifies to permit full access.  

query: Specifies to permit control query.  

server: Specifies to permit server access and query.  

synchronization: Specifies to permit server access only.  

acl-number: Basic ACL number, in the range of 2000 to 2999 

Use the ntp-service access command to configure the NTP service access-control right to the local 

device.  

Use the undo ntp-service access command to remove the configured NTP service access-control 

right to the local device.  

By default, the local NTP service access-control right is set to peer.  

From the highest NTP service access-control right to the lowest one are peer,  server, 

synchronization, and query. When a device receives an NTP request, it will perform an 

access-control right match and will use the first matched right.  

 

z 

The ntp-service access command provides only a minimum degree of security protection. A more 

secure method is identity authentication.  

z 

Before specifying an ACL number in the ntp-service access command, make sure you have 

already created and configured this ACL.  

 

# Configure devices on the subnet 10.10.0.0/16 to have the full access right to the local device.  

<Sysname> system-view 

[Sysname] acl number 2001 

[Sysname-acl-basic-2001] rule permit source 10.10.0.0 0.0.255.255 

[Sysname-acl-basic-2001] quit