I have 2 VPS in DigitalOcean. I was able to SSH into them with password before today. But now, when I try to SSH with my machine which is Kali Linux, after type the password, I get this response:
packet_write_wait: Connection to X.X.X.X port 22: Broken pipe
I tried to add SSH key of my machine (I am not sure did it right) but no success. I know the problem is in Kali because I can SSH into with my other machine which is Windows.
What can be the problem?