Linux opens the specified port command_Boda Java World Blog

Method 1 CentOS: 1. Open the firewall systemctl start firewalld 2. Open the specified port firewall-cmd –zone=public –add-port=1935/tcp –permanent Command meaning: –zone #Scope –add-port=1935/tcp #Add port, the format is: port/communication protocol –permanent #Permanently effective, without this parameter, it will fail after restarting 3. Restart the firewall firewall-cmd –reload 4. Check the port number netstat -ntlp //View all current tcp ports netstat -ntulp |grep 1935 //View all 1935 port usage Method 2 #Open port: 8080 /sbin/iptables -I INPUT -p tcp –dport 8080 -j ACCEPT Method 3 -A INPUT -m state –state NEW -m tcp -p tcp –dport 8080 -j ACCEPT service iptables restart