Auto block allows you to prevent unauthorized login. After enabling the service, an IP address will be blocked if it has too many failed login attempts. Failed login attempts via SSH, Telnet, rsync, Network Backup, Shared Folder Sync, FTP, WebDAV, Synology mobile apps, File Station, or DSM will all add up. You can also have an Allow List which includes the IP addresses that will never be blocked.
Click the Block List tab, and choose either of the following from the Create drop-down menu:
Enter an IP address and set the expiration time.
Import a text file that lists IP addresses to add a number of IP addresses and set the expiration time at once. Tick the appropriate checkbox if you want to overwrite existing IP addresses. If this option is not selected, duplicate IP addresses will be skipped.
To import a file, the file must meet the following criteria:
If the file you selected has a correct format, you will see all the IP addresses in the preview area. Click OK to import.
Click the Allow List tab, and choose either of the following from the Create drop-down menu:
Enter an IP address.
Import a text file that lists IP addresses to add a number of IP addresses at once. Tick the appropriate checkbox if you want to overwrite existing IP addresses. If this option is not selected, duplicate IP addresses will be skipped.
To import a file, the file must meet the following criteria:
If the file you selected has a correct format, you will see all the IP addresses in the preview area. Click OK to import.