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Enabling DHCP

Note: This topic applies to the Inverness Release.

The Smoothwall's Dynamic Host Configuration Protocol (DHCP) service enables network hosts to automatically obtain IP address and other network settings.

Note: Note that a Unified Threat Management serial is required to make use of the DHCP service. For more information, contact your Smoothwall representative.

The DHCP service provides a fully featured DHCP server, with the following capabilities:

Support for 20 DHCP subnets
Allocate addresses within multiple dynamic ranges and static assignments per DHCP subnet
Automate the creation of static assignments using the ARP cache.

You can use the DHCP service in either Server mode, or Relay mode:

ClosedEnabling the DHCP Server
1. Go to Services > DHCP > Global.

2. From the Global settings panel, configure the following:
• Enabled — Select to enable the DHCP service.
• Server — Select to set the DHCP service to operate as a DHCP server in standalone mode for network hosts.
• Enable logging — DHCP logging is enabled by default. Clear the selection to disable DHCP logging.
3. From the Interfaces panel, select those interfaces which receive DHCP traffic.
4. Click Save to enable the service.

You configure the DHCP service in the Services > DHCP > DHCP server page — see Creating a DHCP Subnet.

ClosedEnabling the DHCP Relay
1. Go to Services > DHCP > Global.

2. From the Global settings panel, configure the following:
• Enabled — Select to enable the DHCP service.
• Relay (forwarding proxy) — Select to set the DHCP service to operate as a relay, forwarding DHCP requests to another DHCP server.
• Enable logging — DHCP logging is enabled by default. Clear the selection to disable DHCP logging.
3. From the Interfaces panel, select the interface which receives DHCP traffic from clients, and the interface that the DHCP server is on, that is, where traffic is relayed to.
4. Click Save to enable the service.

You configure the DHCP server details in the Services > DHCP > DHCP relay page — see DHCP Relaying.