# DHCP Service List

The DHCP (Dynamic Host Configuration Protocol) List page shows which DHCP service is configured on each configured interface on the security device. Different security devices support different DHCP services:

- DHCP Client: Some security devices can act as DHCP clients, receiving a dynamically assigned IP address for any physical interface in any zone.

- DHCP Server: Some security devices can also act as DHCP servers, allocating dynamic IP addresses to hosts (acting as DHCP clients) on any physical or VLAN interface in any zone.

Note: While using the DHCP server module to assign addresses to hosts such as workstations in a zone, you can still use fixed IP addresses for other machines such as mail servers and WINS servers.

- DHCP Relay Agent: Some security devices can also act as DHCP relay agents, receiving DHCP information from DHCP servers and relaying that information to hosts on any physical or VLAN interface in any zone.

- DHCP Client/Server/Relay Agent: Some security devices can simultaneously act as a DHCP client, server, and relay agent. Note that you can only configure one DHCP role on a single interface. For example, you cannot configure the DHCP client and server on the same interface. Optionally, you can configure the DHCP client module to forward TCP/IP settings that it receives to the DHCP server module, for use when providing TCP settings to hosts in the Trust zone acting as DHCP clients.

This page contains the following information:

Interface: Identifies the name of the interface.

DHCP Service: Identifies the DHCP service configured on the interface—Server, Client or Relay.

Configure: The following options might be available depending on the security device model:

Click Edit to configure DHCP on an interface for the first time or to modify an existing configuration. For more information, see Interface Configuration.

Click Remove to remove an interface.

Click Addresses to view the DHCP Server Address List for that interface. For more information, see DHCP Server Address List.

Click Report to view the DHCP IP Address Binding Status page. For more information, see DHCP IP Address Binding Status.