Configure SSH Server to login to a server from remote computer.
[1] OpenSSH is already installed by default even if you installed CentOS with [Minimal Install], so it’s not necessarry to install new packages. You can login with Password Authentication by default, but change some settings for security like follows.

[root@localhost ~]# vi /etc/ssh/sshd_config
# line 38: uncomment and change (prohibit root login remotely)
PermitRootLogin no
[root@dlp ~]# systemctl restart sshd

[2] If Firewalld is running, allow SSH service. SSH uses 22/TCP port

[root@localhost ~]# firewall-cmd --add-service=ssh --permanent
success
[root@localhost ~]# firewall-cmd --reload
success

Configure SSH Client on CentOS.
[3] Install SSH Client.

[root@client ~]# yum -y install openssh-clients

[4] Connect to SSH server with a common user.

# ssh [username@(hostname or IP address)]
[root@client ~]# ssh root@localhost.local
The authenticity of host 'localhost.local (<no hostip for proxy command>)' can't be established.
ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:60:90:d8.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'localhost.local' (ECDSA) to the list of known hosts.
root@localhost.local's password:      # password of the user
[root@localhost ~]$     # just logined

[5] It’s possbile to execute commands on remote Host with SSH like follows.

# for example, execute [cat /etc/passwd]
[root@client ~]$ ssh root@localhost.local "cat /etc/passwd"
root@localhost.local's password:
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
...
...
postfix:x:89:89::/var/spool/postfix:/sbin/nologin
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

Configure SSH Client on Windows.
[6] Get a software which you can login with SSH from Windows clients.
This example shows to use Putty.
Install and start it and input your server’s IP address and Click [Open] button like follows.