Network Routing

DSM provides several network routing options for various network configuration requirements.

To separate network interfaces' network flow in the same LAN:

1. Go to Control Panel > Network > Advanced.
2. Under General, check Reply to ARP requests if the target IP address is a local address configured on the incoming interface.
3. Click Apply to save your settings.

This establishes the default routing rule for each network interface, which will cause network packets from each interface be sent out from their own respective physical network interface.

Furthermore, if you have more than two network interfaces in the same LAN, enabling this option causes network flow on each interface to be transported separately. You can then apply separate firewall rules for each interface.

To route each network interface through their respective gateways:

1. Go to Control Panel > Network.
2. Under General, check Enable Multiple Gateway.
3. Click Apply to save your settings.

This will lead to routing for each network interface in your network to go through their respective gateways.

To change the default gateway:

1. Go to Control Panel > Network.
2. Under Network Interface, click Service Order.
3. Rearrange your gateways by selecting the gateway and clicking Up or Down.
4. Click OK.

The gateway at the top of the order will serve as the default gateway for your LAN.

To set up static routing:

1. Go to Control Panel > Network.
2. Under Static Route, click Create.
3. In Destination Network, enter the IP address of your destination.
4. In Netmask, enter the netmask of your destination.
5. In Gateway, enter your destination's gateway address.
6. In Interface, select your destination's interface.
7. Click OK.

To view the IP routing table:

1. Go to Control Panel > Network.
2. Under Static Route, click IP Routing Table.
3. Select a network interface to view its IP routing table from the upper-left drop-down list.