Hello,

I have a java-based instant-messaging server application, which I need to host on a VPS. This server application comes with its own Java Virtual Machine.
I do not need any other software than that, no web server, no database, no PHP, no multiple domains or whatever, because that stuff is hosted on another server
So I assume, I will just need an unmanaged VPS. Am I right or is there more to it?
Do I have to install and manage firewall and security on unmanaged VPS, or is that done by the provider?
What about monitoring? Any other issues I need to take into consideration?
Can somebody enlighten me please?

Thanks,
Michael
.