[humanpuff69]

there are lot

Change Port ssh, change password, and turn off root username access, and configure NFGW and Overcome Force brutal attacks. And BINGO Your server must be able to withstand the attack
After configuring this

great advice . with the default ssh port and root username the brute foirce attack will be much easier because they know the username / ssh port by changing it you are making another work to those chinese botnet