User`s guide

Synology DiskStation User's Guide
Based on DSM 4.1
48 Chapter 6: Enhance Internet Security
4 Specify the source IP address in the Source IP section. You can choose to allow or deny access from a
particular source IP using one of the following options:
 All: Choose this option to apply the rule to all source IP addresses.
 Single host: Choose this option to apply the rule to an IP address.
 Subnet: Choose this option to apply the rule to a subnet.
5 Choose Allow or Deny in the Action section to allow or deny the source IP address to access the specified
ports.
Note:
 When you combine multiple LAN ports with link aggregation, firewall will apply the rules from the first network
interface, and reserve the rules of the second network interface. For more information about link aggregation, see
"LAN" on Page 19.
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 If your system has multiple 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, or use the Up, Down button. 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.
Control the Outgoing Traffic of Services
Traffic control aims to control the outgoing traffic of services running on DiskStation. Once you select a service,
you need to set up the Guaranteed Bandwidth and Maximum Bandwidth to limit its outgoing traffic.
Go to Main Menu > Control Panel > Firewall > Traffic Control to create traffic control rules.
Note: You can create up to 100 rules for a network interface.
To create a traffic control rule:
1 Click the LAN, Bond (multiple-LAN models only), PPPoE, or Wireless tab, depending on the type of your
network connection.
2 Click Create to open the settings window.
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Link Aggregation is supported on specific models only.