My Boss, who I may add knows nothing really about servers & web hosting, has assigned me to add a Firewall to our Web site which is hosted on a dedicated server at an ISP.
My Questions are:
1- what is a Firewall?
2- does it come already as part of a red hat enterprise server?
3- if not should we add it?
4- if yes, which is best and easiest to add?
Thank you all.
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