SSH Login Failure — Connection reset by peer

If SSH login fails with kex_exchange_identification: read: Connection reset by peer, try the following checks.

When using ssh, the -v flag prints debug logs. In the logs below, the server never sends anything; if the first step succeeded, you would see the remote protocol version.

Likely places to check:

1. /etc/ssh/sshd_config

   Verify the port is correct; it may not be 22. If you change the config, restart the service with service sshd restart.

2. /etc/hosts.allow and /etc/hosts.deny

   By default these files are empty with no active rules; make sure nothing is blocking your client.

Note: editing the above files requires sudo or root privileges.