Skip to main content

Set up Smoothwall Appliance as a DHCP Relay

Updated
This article applies only to On-Premise Appliance, not to our Cloud products.

As a relay, the Smoothwall Appliance listens for DHCP requests on the defined interfaces and forwards them to your DHCP servers. This allows your remote server across your LAN to perform DHCP allocation.

To use your Smoothwall Appliance as a DHCP Server to automatically allocate IP addresses and other network settings to connected clients, see Set up Smoothwall Appliance as a DHCP Server .

  Note

DHCP functionality supports up to 20 Bridge, Bonding, or VLAN interfaces.

Step 1: Turn on Relay mode

  1. Go to Services > DHCP > Global.
  2. In the Global settings section, select the Enabled checkbox.
  3. Select Relay (forwarding proxy).
  4. To generate logs you can report on from Reports > Logs > System under the DHCP server section, ensure the Enable logging checkbox is selected.
  5. In the Interfaces section, select the interfaces that receive DHCP traffic from clients and the interface to which the Smoothwall Appliance relays traffic.

      Note

    You can add new interfaces and manage their IP addresses from Network > Configuration > Interfaces.

  6. Select Save.

Step 2: Configure your DHCP relay settings

  1. Go to Services > DHCP > DHCP relay.
  2. Enter the IP address values that a requesting network host will receive for the Primary DHCP server and (optionally) Secondary DHCP server.
  3. Select Save.

Step 3: Check your setup

  1. Go to Services > DHCP > Global.
  2. Ensure the Enable logging checkbox is selected.
  3. Connect a client device to your network.
  4. Go to Reports > Logs > System.
  5. For Section, select DHCP server.
  6. Select Update.
  7. Check the System log section for configuration errors.