What criteria do server admins use to realize that I'm playing with an alt account?

[eqlwle]

Hi guys! Can anyone tell me, by what parameters rustoria administration realized that I have other accounts and I play with alt account? ip has been changed, a new windows was installed.... But, on this account I was banned on rustafied, facepunch and other servers except rustoria....

[SosaOfficial]

Where are you getting accounts from + what are you using to change ip?

[eqlwle]

it was my personal account, I played on it with cheats more than a year ago and there banned almost all official servers, except for rastoria and today the admin of rastoria banned me with a note that this is my alt account.... and so I have a dynamic ip

If I buy a clean account with 0 hours in rust, reinstall Windows and change Ip..will the admin realize that again my alt account?