^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Disconnecting (authenticating|invalid) user .+([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+: (Too many authentication failures)|(Change of username or service not allowed: \(.+,ssh-connection\)( -> \(.+,ssh-conn.*\)?)?) \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Disconnecting: Change of username or service not allowed:
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Disconnecting: Too many authentication failures
-^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Failed password for invalid user .+from ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+
+^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Failed (none|password) for invalid user .+from ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Invalid user .+from ([0-9]{1,3}\.){3}[0-9]{1,3}
-^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: PAM [0-9] more authentication failures
+^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: PAM [0-9] more authentication failures?
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: PAM service\(sshd\) ignoring max retries
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Protocol major versions differ for ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+:
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: Unable to negotiate with ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+: no matching (cipher|host key type|key exchange method) found\.
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: error: userauth_pubkey: parse key: invalid format \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: exited MaxStartups throttling
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: fatal: (Read from socket|Write) failed: Connection reset by peer
-^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: fatal: Timeout before authentication
+^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: (fatal: )?Timeout before authentication
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: fatal: Unable to negotiate a key exchange method \[preauth\]$
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: fatal: no hostkey alg \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: fatal: userauth_finish: send failure packet: (Broken pipe|Connection reset by peer) \[preauth\]$