hello

here's what i want to do and i need some starting points
thanks in advance

when i search google and google returns
i'd like to catch the packets and do something
and pass on the packets to the browser.

i 've got this answer from someone but i don't have any idea about iptables.

set up an iptables rule to forward the packets from google.com to the QUEUE target...and in your program, use libipq to bind to the netlink socket, and then read from that socket, your program will wake up when a packet arrives..you can then do whatever you need to do, and supply the verdict for what to do with the packet back to the kernel, possibly modifying the packet too

if someone can elaborate this, it'll be very helpful

thank you

well.

i found this site
http://www.linuxguruz.org/iptables/t...ut1/tut-6.html

but never be able to figure out how to compile and use it.


what am i supposed to do with this code? --;

excerpt
-------------
This is the lowest layer of hooking into the kernel stack

You can write your own kernel modules which hook directly into the IP stack (or others)

/* Rusty's Dumb netfilter hook example */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/netfilter_ipv4.h>
#include <linux/ip.h>

/* The work comes in here from netfilter.c. */
static unsigned int
stupid_hook(unsigned int hook,
struct sk_buff **pskb,
const struct net_device *indev,
const struct net_device *outdev,
int (*okfn)(struct sk_buff *))
{
if ((*pskb)->len == 200)
return NF_DROP;

return NF_ACCEPT;
}

static struct nf_hook_ops stupid_ops
= { { NULL, NULL }, stupid_hook, PF_INET, NF_IP_POST_ROUTING, 0 };

static int __init init(void)
{
return nf_register_hook(&stupid_ops);
}

static void __exit fini(void)
{
nf_unregister_hook(&linuxmag_ops);
}

module_init(init);
module_exit(fini);

That's module code IIRC. See http://www.tldp.org/HOWTO/Module-HOWTO/index.html

Can I go back to the start and ask what properties or content you want to mangle the packets for?
If you're doing really simple replacements in packets, you could use something like netsed, if you want to spy on http traffic @stake (L0pht) or zone-h.org have a proxy for that, or if it's just changes in the content you could use a rewriting proxy like Privoxy...

thanks unSpawn

i want to do some analysis on the documents that Google returns.

so i wouldn't change the IP packet that go to my browser
but rather look at data(links) on the return page and grab pages that links point to and hopefully do some interesting things with the pages.


i haven't looked at the module howto.. i'm going to now

Sounds interesting. So we're talking HTTP here (layer 6), not TCP/IP (4)... Couldya hint at *what* you're looking for?

i hope this turns out to be interesting =)
well it's simple..

when google returns 30 results(my default)
if i am after specific answer for a specific question.
i can just read first 1-3 returns.. no big deal.


if i'm after a rather long information.. like "machine learning tutorial"
i'd like to know which one is the easiest one i can read

how to sort out the difficulty will be hard but i'm just into it.. =)

Uh. Ok.
Kinda reminds me of "browser helpers", IIRC Alexa was one of them in them Wintendo yrs, that let you know if ppl recommend a site/page/doc.
IMO methods like weighing, ranking, recommendation schemes, even if they where based on browsing behaviour, personal profile and knowledge such seemed more restricting than helpfull to me. Especially when you're eager to get *off* trodden paths...
So hard it will be, yes :-]

thanks seriously.... u guys made me do stuff....learn stuff...... i had been asking someone to help me coz i felt helpless coz i had nothing to start with not even a single example to start with i read several ebooks but nothing helped... but ur words brought me to realize that its me who wasnt serious enuf to help myself and thanks for all that you all helped i paved my way myself....and i have written my first netfilter code just becaue i was totally determined... go bless you all......thanks once again......

i know this is a technical thread and not emotional chit chat thread but could hold myself from thanking you and many others....:-) keep doing the good work of showing a candle so that someone can be as bright as star..... thanks

Wow, seriously???? You re-opened a NINE YEAR OLD THREAD, to ask someone to mail you code, because your project is behind, and say it's 'urgent'???

No, this isn't urgent for ANYONE here, the OP has moved on LONG ago, and no one here is going to email you. This is a community forum, not the place to come for free, personalized, one-on-one email tech support.

A highjacking, necropost was modified to another post entirely. Since the original post by oracle89divi22 seemed related to another post about writing a root it, I'm closing this years old thread to let it die.