^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: 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\[[0-9]+\]: 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\[[0-9]+\]: banner exchange: Connection from ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+: (Broken pipe|could not read protocol version|invalid format)
+^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: dispatch_protocol_error: type [0-9]+ seq [0-9]+ \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: drop connection #[0-9]+ from \[(UNKNOWN|([0-9]{1,3}\.){3}[0-9]{1,3})\]:-?[0-9]+ on \[([0-9]{1,3}\.){3}[0-9]{1,3}\]:22 past MaxStartups
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: Bad remote protocol version identification:
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: beginning MaxStartups throttling
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: connect_to [^ ]+ port [0-9]+: failed\.$
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: connect_to [^ ]+: unknown host \(No address associated with hostname\)$
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: connect_to [^ ]+: unknown host \(Temporary failure in name resolution\)
-^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_protocol_error: type [23]0 seq [0-9]+ \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_exchange_identification: Connection closed by remote host
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_exchange_identification: banner line contains invalid characters$
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_exchange_identification: client sent invalid protocol identifier
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_exchange_identification: read: Connection reset by peer
+^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: kex_protocol_error: type [23]0 seq [0-9]+ \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: maximum authentication attempts exceeded for .+ from ([0-9]{1,3}\.){3}[0-9]{1,3} port [0-9]+ ssh2 \[preauth\]
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: send_error: write: Connection reset by peer$
^[0-9]{4}-[0-9]{2}-[0-9]{2}T[ .:+0-9]+ [._[:alnum:]-]+ sshd\[[0-9]+\]: error: userauth_pubkey: parse key: invalid format \[preauth\]