- Updated to Redesign of the webinterface
Prepare IP address ranges
UTMuser@firewall.name.fqdnNetwork
In order for the firewall to function as a DHCP server in a network, a fixed IP from the network area to be assigned must be located on the corresponding interface. In the example, IP addresses are assigned in the network 192.0.2.0/24. To realise this, an IP from this network is added to the interface. LAN3 → → IP addresses → If necessary, enter an IP from the desired network with the desired subnet mask in the click box. Here 192.168.222.1/24
Set up DHCP server
UTMuser@firewall.name.fqdnNetwork
Under DHCP Pools multiple DHCP pools can be added.
AreaAfter clicking
, the setup wizard opens and the DHCP parameters can be specified.
Edit pool
After the pool has been created correctly, the pool start and end address can be changed and other parameters of the DHCP pool can be set up to be passed to the DHCP client.
Tab General
GeneralUTMuser@firewall.name.fqdnNetworkNetwork configuration
Changes to the pool range start and pool range end possible
Tab Options
Options - DHCP OptionOption | Option number | Example parameters | Comments | UTMuser@firewall.name.fqdnNetworkNetwork configuration |
---|---|---|---|---|
Router: | 3 | » ✕192.168.222.1 | Router configured as in step 3 | |
Domain name: | 15 | securepoint.local | Name of the domain in which the DHCP leases are assigned | |
Domain name server: | 5 | » ✕192.168.222.1 | Name server as configured in step 2 | |
Netbios name server: | 44 | NetBIOS over TCP/IP Name Server Option | ||
SMTP-Server: | 69 | Simple Mail Transport Protocol (SMTP) Server Option | ||
NTP Server: | 41 | Servers should be listed in order of preference. | ||
Vendor Encapsulated Options: | 43 | Values must be given coded. | ||
TFTP Server Name: | 66 | i.e.: profile.gigaset.net | The IPv4 address, or the hostname of the TFTP server option tftp-server-name text; | |
Bootfile Name: | 67 | The name of the bootfile file option bootfile-name text; | ||
Default URL: | 114 | https://teamwork.gigaset.com/gigawiki/display/GPPPO/DHCP+option+114 | Default URL option default-url string; | |
VLAN ID: | 132 | The ID of the VLAN used option vlan-id code 132 = text; option vlan-id "128"; | ||
Next Server:notempty New as of: v12.5 |
The IPv4 address of the Next server | |||
Default Lease Time: | 51 | 600 Seconds | Default validity period of the IP address if the client has not requested an explicit duration. | |
Maximal Lease Time: | 7200 Seconds | Maximum validity period of the IP address in seconds that the client may receive when explicitly requested. | ||
Reject unknown clients: | No | If activated , an IP address is only assigned if there is a entry at Static DHCP tab for the MAC address of the client. Example: Pool 1: 10.10.10.10 - 10.10.10.20 (Net on LAN3) | ||
DHCP Setup
The
button opens a dialogue for the DHCP settings.
Static DHCP
If hosts are to be assigned predefined IP addresses ( fixed IPs bound to the MAC address, but assigned by the UTM), these IPs can be reserved with static leases:
Configuration under Area Static DHCP Button
Static leases outside a pool
Widget
In the administrator interface of the UTM, there is a DHCP widget that provides an overview of the existing DHCP connections.
Further information can be found in the Wiki article UTM Widgets.