实验环境:
docker version (18.06.3-ce)
centos7
1.安装 iptables 管理命令
yum -y install iptables-services
2.启动iptables
systemctl start iptables
3.禁止所有的IP访问docker的3306端口
[root@192]# iptables -I DOCKER-USER -i ens160 -p tcp --dport 3306 -j DROP
4.允许192.168.100.100 地址访问docker 3306端口
[root@192]# iptables -I DOCKER-USER -i ens160 -s 192.168.100.100 -p tcp --dport 3306 -j ACCEPT
5.查看DOCKER-USER策略
[root@192]# iptables --line -nvL DOCKER-USER
Chain DOCKER-USER (1 references)
num pkts bytes target prot opt in out source destination
1 0 0 ACCEPT tcp -- ens160 * 192.168.100.100 0.0.0.0/0 tcp dpt:3306
2 0 0 DROP tcp -- ens160 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:3306
保存DOCKER-USER策略
service iptables save
telnet测试
[root@111 ~]# telnet 192.168.100.100 3306
Trying 192.168.100.100...
Connected to 172.17.118.226.
Escape character is '^]'.
删除DOCKER-USER策略
iptables -D DOCKER-USER 1 #删除DOCKER-USER链第一条规则