Hi, lidong103
I hope the following answer can help you!
you can add whitelist :
Procedure
Choose System Settings > Whitelist.
Select Enable.
If Enable is deselected, the whitelist is invalid. That is, all IP addresses are allowed to connect to the endpoint. You can modify the whitelist only after selecting Enable here.
Click Add and set the IP address and Mask length.
- Click OK. The settings take effect immediately.
To delete a record from the whitelist, select the record and click Delete.