etc/dhcp/dhcpd.conf
#ddns-update-style none;
default-lease-time 600;
max-lease-time 2400;

option subnet-mask 255.255.255.0;
option broadcast-address 10.10.1.255;
option routers 10.10.1.254;
option domain-name-servers 10.10.1.1, 10.10.1.2;
option domain-name "serverlan.domain";

subnet 10.10.1.0 netmask 255.255.255.0 {
	range 10.10.1.11 10.10.1.200;
}

====
etc/network/interfaces
#the loopback network interface
auto lo
iface lo inet loopback

#the primary network interface (facing the iweb)
auto eth1
iface eth1 inet dhcp

#seconday network card (facing the lan)
auto eth0
iface eth0 inet static
address 10.10.1.1
netmask 255.255.255.0