Hey All -

I'm obviously new to Bitcoin mining --- after researching I went in big -- and purchased a 500GH machine that runs via a Raspberry Pi device running MinePeon.  And it works great. However - after a few days I noticed that a new pool had been added and it was stealing ALL of my hashing - i.e. my money.

I kick him off, change the password and he comes back to add his pool about once per hour.  He's get on for about 10-15 minutes before I notice. So he's getting a nice chunk of my hashing time.

The machine is hosted at a local facility but The machine is NOT behind any firewalls -- and this is where I need your help and suggestions --
I have never set up a firewall before so absolutely any information or insight would be greatly appreciated.

What do you think of this firewall - I'm thinking of purchasing it.:
http://www.amazon.com/Cisco-Systems-Wireless-Security-RV215WAK9NA/dp/B00AHSNQNS/

Thank you all in advance -

~Gauston