安裝Ubuntu DHCP Server

安裝環境Ubuntu 12.04, 14.04 或 16.04
安裝套件

$ 
sudo 
apt-get 
install 
isc-dhcp-server -y

配置DHCP Server

$ 
sudo 
vim 
/etc/dhcp/dhcpd
.conf

新增下面內容：

default-lease-time 600;

max-lease-time 7200;

option domain-name "mydomain.example";

subnet 192.168.1.0 netmask 255.255.255.0 {

range 192.168.1.10 192.168.1.100;

range 192.168.1.150 192.168.1.200;

option subnet-mask 255.255.255.0;

option broadcast-address 192.168.1.255;

option routers 192.168.1.1;

option domain-name-servers 192.168.1.1, 192.168.1.2;

}

修改/etc/default/isc-dhcp-server

$ 
sudo 
vim 
/etc/default/isc-dhcp-server

找到INTERFACES=""這行並修改，指定DHCP Server所使用的網路卡：

INTERFACES="eth2"

修改/etc/network/interfaces

$ 
sudo 
vim 
/etc/network/interfaces

配置eth2網路卡，新增下面內容：

auto eth2

iface eth2 inet static

address 192.168.1.1

netmask 255.255.255.0

讓eth2網路卡設定生效

# Ubuntu 14.04

$ 
sudo 
ifdown eth2; 
sudo 
ifup eth2

# Ubuntu 12.04

$ 
sudo 
service networking restart

重新啟動DHCP Server

$ 
sudo 
service isc-dhcp-server restart

DHCP Server 啟動|停止|狀態

$ 
sudo 
service isc-dhcp-server start|stop|status

開機不要啟動DHCP Server

# Ubuntu 16.04

$ 
sudo 
update-rc.d isc-dhcp-server disable

# Ubuntu 14.04 與 Ubuntu 12.04

$ 
echo 
manual | 
sudo 
tee 
-a 
/etc/init/isc-dhcp-server
.override

開機啟動DHCP Server

# Ubuntu 16.04

$ 
sudo 
update-rc.d isc-dhcp-server 
enable

# Ubuntu 14.04 與 Ubuntu 12.04

$ 
sudo 
rm 
-f 
/etc/init/isc-dhcp-server
.override

安裝環境Ubuntu 10.04
安裝套件

$ 
sudo 
apt-get 
install 
dhcp3-server -y