Not able to copy files between ubuntu machines using scp : <p>when i copy a file from one machine to another (both are ubuntu 16.04) the following error will be shown.
But i ping the machines it will connect each other.
root@192.168.1.114's password: 
Permission denied, please try again.
root@192.168.1.114's password: 
Permission denied, please try again.
root@192.168.1.114's password: 
Permission denied (publickey,password).</p>

<p>i disables the firewall of both. But no change .Please advise.</p>
