Need advice--What security do you have in place - specifically firewall???

Hello

I am looking for the best and most proper way to lock down my server without spending an arm and a leg.
What elements do I want to make sure are in place to insure proper security measures have been taken?
And more specifically, software or hardware based firewall and what type?

ThanksNeed advice--What security do you have in place - specifically firewall???

 

 

 

 

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