i am a little beginner in administration. Have an VPS on ovh.com, where i had expect 28 tries in 2 days from different ip's (usually china) to log on my ssh (late centos installed with Centos Web Panel in. The plann is mount a lot of google drives for more free space (ocamlfuse - :evil:) and run multiple websites with an teamspeak server. I want to set TS3 up, make permissions and block the Query port (incoming and outgoing), Set multiple websites by NginX and been no scaried about that attacks. Now, someone has broke my 17-words password and shutted down my server (wtf, it was not any out of CPU / RAM).
So, to be sure there isn's any malware on my VPS i need to install again new OS and configure my disks and use different password alphanumeric...
The key and my problem is, pfSense is an good idea for great protect on VPS? What monitoring should i use to be sure my system is going well without strange actions (i know there is an app for monitor system)? On what part should i take care to be sure i made it well? Any dangerous from using NginX or with what i should take verry care?
I am a little beginner, so if you can help or just answer to any of my question, don't worry, write, i will vote up for help. For complete answer i will mark as accepted. (sorry for little broken english)
edit: so pfSense is out cos of having VPS not Dedicated Server.