Firewall programming ..

vasiqmz · 03-02-2014, 05:27 AM

If i were to design a Application Firewall then does is it need Kernel Level Programming?

unSpawn · 03-02-2014, 06:38 AM

Have you actually looked at some of the existing, production-ready application level firewalls?

vasiqmz · 03-02-2014, 06:44 AM

Quote:

Originally Posted by unSpawn

Have you actually looked at some of the existing, production-ready application level firewalls?

Yes I have but not at the Coding level. Now I was only looking into how the internal works as in .... is it programmed at Kernel level ?

unSpawn · 03-02-2014, 09:57 AM

Quote:

Originally Posted by vasiqmz

Yes I have

So? Which ones did you find?

Quote:

Originally Posted by vasiqmz

but not at the Coding level.

If you want to know what a product does you read the label on the tin.
And if you want to know how it does that you'd look inside the tin, yes?

frankbell · 03-02-2014, 08:32 PM

The Linux built-in firewall capability is called iptables; it is part of the terminal. There are a number of command line and GUI frontends that can be used to manage it. You can also write iptables rules directly. To learn more, open a terminal and run the command man iptables to open the iptables manual page.

Note that "man pages" are written as references, not as tutorials; they can be very barebones and dense. Here's one tutorial: http://www.thegeekstuff.com/2011/01/...-fundamentals/