Firweall - Banning foreign IP schemas. (Russia, China, Bulgaria, Hungary, India, Ireland, and the Ukraine)

I am being asked to ban all IP schemas from Russia, China, Bulgaria, Hungary, India, Ireland, and the Ukraine through my firewall.  Does anyone know how to do this?  I know how to block IP addresses but don't know how to identify a countries schema.

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jmloveAsked:
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jabiiiCommented:
what type of firewall are you using that will make a difference on how.
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jabiiiCommented:
if your FW can handle it, you can just block their country extension for one... but if they have a .com etc you will need to know the ip space.
http://www.tamingthebeast.net/articles2/countrycode.htm will give you the country codes.
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jmloveAuthor Commented:
Sonicwall Pro
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Rick HobbsRETIREDCommented:
You would have to determine what ip address ranges are in use in each of the contries and block each range in the router. I don't know which model of Sonicwall you have, so I am unsure if it will support a sufficient number of entries.  Let me know what the model number is and I will let you know if there is any other choice.
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