My mssql 2017 shows in errorlog ‘Password did not match that for the login provided. [CLIENT: 177.159.243.118]’ The ip could be 61.175.211.164 from China or others from Brazil, Iran… This is running continuously. My apps work fine. Am I being attacked?
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Sooo…I changed the sa login and implemented a stronger password. Now they have to guess the user name.
Hello,
Most likely a bot is trying to brute-force your SQL password.
I would strongly recommend closing the SQL port via your droplet’s firewall so that no one could reach your SQL server externally. If you ever need to access the SQL instance remotely, you could whitelist only your own IP.
Regards, Bobby