What should I do if the IP address cannot be accessed under Linux?

The solution is as follows:

1. Edit the /etc/sysconfig/iptables configuration file and add the following configuration:

-A INPUT -m state --state NEW -m tcp -p tcp -s 127.0.0.1 --dport 6379 -j ACCEPT //对本机开放
-A INPUT -m state --state NEW -m tcp -p tcp -s 126.212.173.185 --dport 6379 -j ACCEPT //对126.212.173.185主机开放

If you do not restrict the ip to be open to all hosts, you can remove -s [ip].

In a newly installed Linux system, the firewall is disabled by default, and generally no firewall policy is configured, so the /etc/sysconfig/iptables file does not exist.

Solution:

Installation:

yum install iptables-services

After successful installation: you can find the /etc/sysconfig/iptables configuration file and follow the above steps to write the port that is open to the outside world. .

2. After modification, you need to restart the iptables service. The command is as follows:

systemctl start iptables

You may also need to restart the service program to access the service port, such as: 9093.

Enable firewall filtering rules:

systemctl enable iptables  //设置开启启动

Recommended tutorial: linux tutorial

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