Procedure

1. Go to Network → Services → DHCP.
2. Do one of the following:
   • In the Name column, click the name of the DHCP server to modify.
   • In the Action column, click the edit icon () in the row of the DHCP service to modify.
3. Modify the parameters associated with the DHCP service:

   Option	Description
   Enable DHCP	Select to enable the service.
   IP address / Netmask	View the IP address and subnet mask leased from the DHCP server.
   Preferred DNS	Select the preferred DNS method. Select Use system DNS settings to use the appliance system DNS configured at Network → DNS. Select Use the interface IP address to use the interface IP address as the DNS. If the DHCP server is enabled and DNS forwarding is disabled, Deep Edge automatically enables DNS forwarding through the system DNS settings. If DNS forwarding is already enabled, Deep Edge maintains the existing DNS forwarding configuration. Select Use specified DNS servers to manually configure the DNS settings. If the specified IP addresses match the interface DNS addresses, make sure to check that the DNS forwarding settings also match.
   Gateway	The DHCP server gateway automatically populates based on interface IP address and netmask settings. Optionally change the IP address.
   IP address range from and to	Specify the range of IP addresses to create the IP Pool to which the DHCP configuration applies .

4. Change the Advanced Settings, if needed.
   • For Lease time, adjust the time and date when the leased IP address and netmask is no longer valid.
   • For Static mapping, specify MAC address and IP addresses to add to the service.
5. Click Apply.
6. Verify the settings changed at Network → Services → DHCP.