User's Manual

Synology DiskStation User's Guide
Based on DSM 3.0
58 Chapter 6: Enhance Internet Security
Note:
 When you combine 2 networks with link aggregation, firewall will apply the rules from the first network interface,
and reserve the rules of the second network interface
1
Link
Aggregation
. For more information about link aggregation, see "
" on Page 25
.
 If your system has 2 network ports connecting to the same subnet, the firewall rules might not work properly.
To change the priorities of rules:
Reorder the rules by dragging any of them up or down. Rules at the top will have higher priorities.
To disable rules:
Uncheck the checkboxes next to the rules.
To delete rules:
Select the rules you want to delete and click Delete.
Automatically Block Suspicious Login Attempts
Auto block allows you to prevent unauthorized login via SSH, Telnet, rsync, FTP, mobile devices, File Station,
and the management UI. After enabling the service, an IP address will be blocked automatically if it has too many
failed login attempts.
Go to Main Menu > Control Panel > Auto Block to use the auto block function.
To enable auto block:
1 Tick Enable auto block.
2 Enter the following information to block an IP address with a number of failed login attempts within the
specified minutes :
 Login attempts: The number for failed login attempts
 Within (minutes): The number of minutes
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1
Link Aggregation is supported on specific models only.