Re: Basic Question: Internet Content Filter
Re: Basic Question: Internet Content Filter
- Subject: Re: Basic Question: Internet Content Filter
- From: Frederick Cheung <email@hidden>
- Date: Tue, 13 Jan 2004 12:46:15 +0000
To: email@hidden
From: Raj Doshi <email@hidden>
Subject: Basic Question: Internet Content Filter
Date: Mon, 12 Jan 2004 20:14:17 -0500
Hi,
I want to create software that can intercept HTTP packets before they
reach the browser and have the ability to change the data in the
packets. It seems to me that this software would have to operate at a
fairly low level, but I don't necessarily need to have any TCP/IP
information. I am hoping that some of you might be able to point me in
the right direction for how to get started. It appears that Network
Kernel Extensions might be able to do the job, but I can't find any
good documentation. I've read some posts which seem to indicate that
NKEs are not officially supported anymore. Could I do what I want with
the IOKit or is there something else that I'm missing? I have worked a
lot with Cocoa, but have limited knowledge about these networking
technologies. Thank You for your assistance.
You can probably get somewhere by adding a rule to the firewall telling
it to divert incoming traffic to a port of your choice, and then
listening on that port, forwarding on or filtering or blocking packets
as your app sees fit.
Fred
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