Centos6.8部署內網NTP服務器
一、環境簡介
二、部署拓撲圖
三、部署NTP服務
3.1 安裝NTP軟件
[root@linux ~]# yum install ntp -y
[root@linux ~]# rpm -qa ntp
ntp-4.2.6p5-10.el6.centos.2.x86_64
3.2 配置NTP服務
3.2.1 查找ntp配置文件
[root@linux ~]# rpm -qc ntp
/etc/ntp.conf
/etc/ntp/crypto/pw
/etc/sysconfig/ntpd
3.2.2 修改ntp配置文件，將上層NTP同步時間服務器修改爲自己認爲連接較快的
[root@linux ~]# vi /etc/ntp.conf
…………………………省略……………………………
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#server 0.centos.pool.ntp.org iburst
#server 1.centos.pool.ntp.org iburst
#server 2.centos.pool.ntp.org iburst
#server 3.centos.pool.ntp.org iburst
server time1.aliyun.com prefer
server time.windows.com
server time.nist.gov
server time-b.nist.gov
…………………………省略……………………………
3.2.3 更改參數，讓某個網段可以和ntp server進行時間同步
…………………………省略……………………………
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
restrict -6 ::1
# Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
restrict 172.16.0.0 mask 255.255.240.0 nomodify notrap
……………………………省略……………………………
3.3 啓動NTP服務
[root@linux ~]# /etc/init.d/ntpd start
Starting ntpd: [ OK ]
[root@linux ~]# netstat -lntup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1352/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1431/master
tcp 0 0 :::22 :::* LISTEN 1352/sshd
tcp 0 0 ::1:25 :::* LISTEN 1431/master
udp 0 0 172.16.9.131:123 0.0.0.0:* 1640/ntpd
udp 0 0 127.0.0.1:123 0.0.0.0:* 1640/ntpd
udp 0 0 0.0.0.0:123 0.0.0.0:* 1640/ntpd
udp 0 0 fe80::250:56ff:feb1:91fa:123 :::* 1640/ntpd
udp 0 0 ::1:123 :::* 1640/ntpd
udp 0 0 :::123 :::* 1640/ntpd
3.4 優化NTP服務
讓ntp服務開機自啓動
[root@linux ~]# chkconfig ntpd on
[root@linux ~]# chkconfig --list ntpd
ntpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
四、測試NTP服務
1.在windows server上面測試
2.在checkpoint防火牆上面測試
