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Sophos XG - Logs sho the message= "User '-' failed to login from 'x.x.x.x' using ssh because of wrong credentials

I have received these constant alerts of attempt to access my internal web server, I believe it is a brutal attack attempt via CLI with SSH, but I cannot identify what may be creating this problem, I have already scanned the server itself and I did not find anything that could be suspicious, I also checked the access through the XG wan, ssh is disabled, I scanned ports also open at the server level and I did not find port 22 in the list of open ports. please could someone help me to understand what may be happening?

 



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