CentOS7 View open Ports command

CentOS7 View open Ports command

CentOS7 Open-close view ports are controlled by a firewall with the following commands:

To view ports that are already open:

Linux Code

1. Firewall-cmd--list-ports

Open port

Linux Code

1. Firewall-cmd--zone=public--add-port=/tcp--permanent

Command meaning:

–zone #作用域

–add-port=80/tcp #添加端口 in the format: Port/Communication protocol

–permanent #永久生效, fail after reboot without this parameter

Restarting the firewall

Linux Code

2. #重启firewall
4. Firewall-cmd--reload
6. #停止firewall
8. Systemctl Stop Firewalld.service
10. #禁止firewall开机启动
12. Systemctl Disable Firewalld.service

CentOS7 View open Ports command