Add Allows adding an address range. Select or create an IPv4 address range (IP address
range network object).
Delete Allows deleting one or several address ranges simultaneously.
The table shows the address ranges used by the DHCP server for distributing addresses to
clients:
Address range Select an IP address range network object from the drop-down list. The server will pick
from this pool to distribute addresses to clients.
If none of the firewall’s protected interfaces has an IP address in the network hosting
this range, a warning message will appear: “No protected interfaces match this
address range”.
Gateway This field allows assigning a specific default gateway for DHCP clients.
Select a host network object from the drop-down list. If no objects are selected, the
value “default” will be displayed in this column. The host selected in the Default
gateway field in the Settings section will then be used as the gateway for DHCP
clients.
Primary DNS This field allows assigning a specific main DNS server to DHCP clients.
Select a host network object from the drop-down list. If no objects are selected, the
value “default” will be displayed in this column. The host selected in the Primary DNS
field in the Default settings section will then be used as the DNS server for the client.
Secondary DNS This field allows assigning a specific secondary DNS server to DHCP clients.
Select a host network object from the drop-down list. If no objects are selected, the
value “default” will be displayed in this column. The host selected in the Secondary
DNS field in the Default settings section will then be used as the DNS server for the
client.
Domain name This field allows indicating a specific domain name that will be used by the DHCP
client for its DNS resolution.
If no name is specified, the value “Default domain” will be displayed in this column.
The domain name indicated in the Domain name field in the Default settings section
will then be used for the client.
WARNING
Address ranges must not overlap. An address range belongs to a single bridge/interface.
Reservation
Even when a server that dynamically distributes IP addresses to clients is used, a specific IP
address can be reserved for certain hosts. This configuration resembles static addressing, but
nothing is configured on client workstations, thereby simplifying their network configuration.
Action buttons
To add or delete reserved addresses, click on Add or Delete.
Add Allows adding a reserved IP address for a specific host network object.
Delete Allows deleting an IP address reservation. If a reservation is cancelled, the host
concerned will be assigned a new random address when it is renewed.
The table displays the host objects for which addresses have been reserved: these objects must
always be defined using an IPv4 address and their MAC address. Indeed, the MAC address will be
used as the client’s unique ID for obtaining or renewing its reserved IP address.
Page 93/448 sns-en-user_configuration_manual-v3 - Copyright © Stormshield 2016
SNS - USER CONFIGURATION MANUAL V.3
DHCP
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