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Gateway programming

Started by emileej Oct 19, 2004 at 2:54 AM 5 replies 1.1k views

Original Post

Oct 19, 2004 at 2:54 AM

My goal is to program an application that will monitor and limit the internet access from a LAN. I have been programming network applications before, but I do not know that much about network 'hardware'/designs. Anyways I have assumed that what I will need is to set up a server to act as gateway on which my program will run. If that is indeed so then how will the clients be transmitting their packets and which messages can I return as a gateway (for instance when a user has broken his quota and I am rejecting his packet)?

overflowed_

Oct 19, 2004 at 4:01 AM

Take a look at iptables and CBQ (Class-based Queueing). You'll need Linux, but it's well worth it.

Edit: Typo

emileej

Oct 19, 2004 at 4:45 AM

As much as this is a problem solution it is also a learning proccess. I would like to program a gateway - preferrably platform independant.

emileej

Oct 19, 2004 at 1:47 PM

Nobody in here have any experience in that field?

ChaoticCanuck

Oct 19, 2004 at 5:13 PM

What you are talking about is not terribly complex, however, these types of tasks usually require operating system specific tools.

Another alternative is to use a pcap library to inspect individual packets and generate your own stats.

emileej

Oct 20, 2004 at 1:17 PM

I had imagined that all packets would just be sent to the gateway which would then either reject them or pass them on. If this is not the case then how is it done - what happens when a computer on a network with a gateway sends a packet?

emileej

Oct 21, 2004 at 5:31 AM

If people don't know the ansvers to those questions then maybe you have some relevant links? I can't find any.

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