Network Limitation For Security Reason
For Security Reason,
We now only accept Google NTP server connection in Asia.
If you need to use NTP server, you can choose the server in EU/AU/NA/SA/AFR and/or Google Anycast NTP Server(The only server is allowed by DMIT in Asia ):
time1.google.com
time2.google.com
time3.google.com
time4.google.com
If you need to use a self-built NTP server, it is recommended to use tunnel protocol or add a non-123 UDP port.
Also, we will drop all the packets which source port is 11211 to our network. There is no limitation on use port 11211 as a server in the DMIT network.
The source port means that when you “downloading”, the server use port 123/11211 sending traffic to your server.
Best regards,
DMIT NOC
jeudi, mars 7, 2019