a_hic
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Firewalls (filtring) programming
Hi all,
I'm a student, I want to build a firewall (even basic) for Windows OS, I want to use C++ (Builder) can you help me in:
-understanding the firewall (fitring) mechanism under Widows
-geting some source code in C++
any Idea or links are appreciated,
I tried to do it but I found it very diffecult for windows, I ound some sourec code but they aren't well explained,
thank you in advance,
I'm a student, I want to build a firewall (even basic) for Windows OS, I want to use C++ (Builder) can you help me in:
-understanding the firewall (fitring) mechanism under Widows
-geting some source code in C++
any Idea or links are appreciated,
I tried to do it but I found it very diffecult for windows, I ound some sourec code but they aren't well explained,
thank you in advance,
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It's a many-month project at least. And you have to know a whole lot about TCP/IP protocols, down to the bit level.
AND if it doesnt work first-time, yo have no idea why, because TCP/IP never returns any error messages if it receives a mal-formed packet. Makes it nearly impossible to debug your code.
If you must, I'd look at the source code from the Linux firewall, ipfilters, available with any of the Linux distros. It's rather huge, don't say I didnt warn you.