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dnsspoof in static network


jiggi
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Hi all,

 

I'm trying to spoof dns in a static network based on the original script. So far, I've spent hours on it without any results - and I don't know why... From my understanding, I would have to do it as such:

Let's say I have a network in 192.168.1.0/24 with one router in 192.168.1.1 and my host is 192.168.1.50.

1) set a static IP on eth0 which mimics the router (example: 192.168.1.1) --> uci set network.lan.ipaddr="192.168.1.1"

2) set a static IP on eth1 which mimics my host on the network (example: 192.168.1.50) --> uci set network.wan.ipaddr="192.168.1.50"

 

And then let the script do it's own stuff with the dnsmasq address and the iptables. The whole script would look like this:

#!/bin/bash

function setup(){

uci set network.lan.ipaddr="192.168.1.1"

uci set network.wan.ipaddr="192.168.1.50"

sleep 5

cp $(dirname ${BASH_SOURCE[0]})/spoofhost /tmp/dnsmasq.address &> /dev/null

/etc/init.d/dnsmasq restart

}

function run(){

   iptables -A PREROUTING -t nat -i eth0 -p udp --dport 53 -j REDIRECT --to-port 53

}

setup

run

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