I already operate and maintain a linux server. This one is intended as emergency failover system, until the main system is back online, if it goes down for some reason.

As for my ISP, they already know that i run web server, since i design static websites and provide hosting services for them. And if they do decide to close of the ports for them that would just give me the excuse to jump ship for another provider. I'm not really happy with this one, there is always something to troubleshoot with costumer service.

Right now I'm just waiting for my current contract to expire so i can switch ISP.