下面這是一些曾經設定過的選項：
* 修改 dhcpd.conf
* 修改租約期限
default-lease-time 250000;
max-lease-time 518000
* 設定 domain name and dns ip
option domain-name "domain name";
option domain-name-servers 168.95.1.1, 139.175.150.20;
* 設定分配 IP
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.150 192.168.1.180;
option broadcast-address 192.168.1.255;
option routers 192.168.1.254;
}
* 設定靜態固定 IP
host inside{
hardware ethernet 00:11:22:33:44:55;
fixed-address 192.168.1.10;
options broadcast-address 192.168.1.255;
option routers 192.168.1.254;
}