Can any people help me to build a Firewall

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Hi everybody.
Can you help me to build a Firewall (Block some App to some IP, Block range of ip out...)?
I don't know start from where...

Sorry for my bad English!

Posted 21-Apr-13 22:11pm

nnthanhtq

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CPallini · Answer 1 · 2013-04-21T22:17:00

Solution 1

Why do you need to write your own? Could not you use an existing one, or modify an open source one to fit your needs? In any case you may have a look at an open source implementation to get some enlightenment.

Posted 21-Apr-13 22:17pm

CPallini

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nnthanhtq 22-Apr-13 4:20am

^^ I'm learning to write my own Firewall. I need some custom function