complex c++ programming.

toothe · 19 Jun 2008 at 10:42

ok for my project at uni i have decided to write a windows based firewall, initially i only want it to be simple, block per ip address possibly port.

i think it would be like ...
informatino recieved on NIC
forwaded to program (ip hook or something i think)
program compares ip or port or protocol to list of blocked / allowed
if allowed forwards on
if not allowed drops it.

has anyone got any ideas of how to impliment this.

my first problem is how do i recieve the information from the nic etc, anyone who knows a good site for kernel based drivers that recieve all information that the nic sends would be helpful

thanks

MarcLister · 19 Jun 2008 at 10:54

Going to ask a mod to move this to HGP for you.

toothe · 19 Jun 2008 at 10:55

yeah sorry my bad

spm_uk · 19 Jun 2008 at 11:54

the only idea i can think of about this is to hit up sourceforge and look for an opensource firewall or bandwidth monitor too see how they interface with the card to monitor data

toothe · 19 Jun 2008 at 11:59

yeah ive looked but nothing that i either understand or does wha i need. i've got 2/3 months before i start my project so hopefully will have at least some understanding of it by then lol

toothe · 19 Jun 2008 at 12:01

http://msdn.microsoft.com/en-us/library/aa504968.aspx looks like wha i need so ill look at something based on that.

matja · 19 Jun 2008 at 22:04

You might have some luck looking through the PeerGuardian source code.

Ladforce · 20 Jun 2008 at 00:05

This is gonna be a tricky project but you should learn a lot. Id advise you first start by learning a lot about networking, learning what information packets contain, learning about the tcp/ip stack in windows, what actually happens to a packet when its received etc before you even start thinking about how your going to interface to a nic.

NickK · 20 Jun 2008 at 18:50

You'll need to understand:
* Networking (OSI levels etc)
* kernel programming (driver models etc) of your chosen platform