One year free accounts, red hat 7.5 system, SSH can connect, when was the first day of the 8080,80,3306 ports can be normal, in the next couple of days and even not, security group is configured (and is configured on the first day), through testing the port scanning, in addition to the 22, other ports are closed, don't know what is wrong.

CodePudding user response:

Check your system whether the firewall/selinux turning on,

CodePudding user response:

Check the system firewall/selinux may not

CodePudding user response:

Other ports in the listening, whether can see port state after login

CodePudding user response:

1. Check the security group of virtual machine Settings
2. Disable the iptables, selinux
3. Another virtual machine from inside the VPC even try
Feel your VPC security group Settings has a problem