Linux 中搭建DHCP伺服器執行個體

        下面的流程執行個體中，DHCP服務分配的IP位址區段為192.168.1.128~192.168.1.133
       
        ㈠ 首先查看dhcp服務是否安裝

[root@localhost ~]# rpm -qa | grep dhcpdhcp-3.0.5-31.el5dhcpv6-client-1.0.10-20.el5sblim-cmpi-dhcp-devel-1.0-49.el5sblim-cmpi-dhcp-1.0-49.el5

        ㈡ 編輯/etc/dhcpd.conf

[root@localhost ~]# cat /etc/dhcpd.conf## DHCP Server Configuration file.#   see /usr/share/doc/dhcp*/dhcpd.conf.sample [root@localhost ~]# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.confcp：是否覆蓋“/etc/dhcpd.conf”? yes[root@localhost ~]# cat /etc/dhcpd.confddns-update-style interim;  #DDNS更新方式，這裡的設定值有3種：ad-hoc、interim和noneignore client-updates;  #忽略用戶端更新subnet 192.168.1.0 netmask 255.255.255.0 {        option routers                  192.168.1.1;   #網關地址設定        option subnet-mask              255.255.255.0; #子網路遮罩設定        option domain-name              "localdomain"; #主機網域名稱        option domain-name-servers      192.168.1.110; #設定DNS伺服器位址        range dynamic-bootp 192.168.1.128 192.168.1.136; #動態分配的IP位址範圍}

        ㈢ 對網卡綁定DHCP服務

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]DEVICE=eth0BOOTPROTO=dhcpONBOOT=yes

        ㈣ 重新啟動DHCP服務
       
           DHCP服務使用UDP的67連接埠，但Iptables不能過濾DHCP服務使用的原始通訊端（Raw Socket）
           所以在服務設定好之後，無須再設定Iptables
           service dhcpd start
           service network restart
           如果在虛擬機器內搭建，記得把網卡模式改成NAT

        ㈤ 驗證

[root@localhost ~]# ifconfig eth0eth0      Link encap:Ethernet  HWaddr 00:0C:29:F9:B7:FA            inet addr:192.168.227.131  Bcast:192.168.227.255  Mask:255.255.255.0          inet6 addr: fe80::20c:29ff:fef9:b7fa/64 Scope:Link