Error connecting to server on centos via putty?

Question

CentOS

There is a virtual machine on centos and there is a virtual machine on Win7 on the same server, the problem is that I cannot connect from under the machine on win7 via putty to the machine on centos, it gives an error:

Answer 1

Install openssh-server
Start openssh service
Check port 22 is available and sshd service is running

Answer 2

What's in the logs on CentOS?
Specifically: /var/log/secure
Also, if you have CentOS 7 there, make sure that the firewalld service is configured to allow connections to port 22. For a test, you can stop it temporarily: systemctl stop firewalld