Used item bought. Thought about changed password but why would that show up in ipscanner even before any id or password is asked?
Ipscanner is just a software to scan alive IP's and it should not give you any ID or password.
Use the default password "root" and if you are using SSH your ID must "root" and password is "admin"
I think you need a guide to setup your miner and let me ask if what miner you have now?
Anyway, if your miner is s9 you can follow this comprehensive guide from dogie check this
[Guide] Dogie's Comprehensive Bitmain Antminer S9 Setup [HD]And here is the another guide from HagssFIN, check this
(Review/Guide) Antminer S9 13.5 Th/s, 1320 W Bitcoin (SHA-256) ASIC miner