CentOS 7 Linux iptables 开放端口映射

/bin/systemctl stop  firewalld.service

systemctl disable firewalld.service

yum install iptables-services

Package iptables-services-1.4.21-17.el7.x86_64 already installed and latest version

vi /etc/sysconfig/iptables

-A INPUT -m state --state NEW -m tcp -p tcp --dport 6070 -j ACCEPT

/bin/systemctl start  iptables.service

systemctl enable iptables.service

iptables -L

yum install nc

nc 106.14.21.223 6070

rpm –q telnet-client

[root@iZuf6492eksiqtd5hy86f8Z pay]# iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080  

[root@iZuf6492eksiqtd5hy86f8Z pay]# iptables -t nat -A PREROUTING -p tcp --dport 16070 -j REDIRECT --to-port 6070  

[root@iZuf6492eksiqtd5hy86f8Z pay]# service iptables save

iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]

service iptables status

/bin/systemctl restart  iptables iptables.service

/bin/systemctl start  iptables iptables.service

/bin/systemctl stop  iptables iptables.service

#查看已经开放的端口

[root@localhost bin]# netstat -tln

#查看网络连接

netstat -apn

#查看端口使用情况

[root@localhost bin]# lsof -i:3306

COMMAND  PID  USER   FD   TYPE DEVICE SIZE/OFF NODE NAME

mysqld  2728 mysql   30u  IPv6  27628      0t0  TCP *:mysql (LISTEN)

lsof -i TCP| fgrep LISTEN

[root@localhost bin]# netstat -anlp | grep 3306

tcp6       0      0 :::3306                 :::*                    LISTEN      2728/mysqld         

unix  3      [ ]         STREAM     CONNECTED     33068    3360/pulseaudio 

[root@localhost bin]# nc -lp 9393 &

[root@localhost bin]# netstat -an | grep 9393

tcp        0      0 0.0.0.0:9393            0.0.0.0:*               LISTEN     

tcp6       0      0 :::9393                 :::*                    LISTEN

vi /etc/sysconfig/iptables

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 9393 -j ACCEPT

[root@localhost nescafe]# /bin/systemctl start  firewalld.service