wlan welcomepage

Hi,

In a ctmagazine from 2007 I found a nice cgi/iptables script to redirect every first visit to a welcome page.

When I'm new, my mac is not on the list, and I browse for example to http://www.howtoforge.com I'm redirected to the welcomepage.
After visiting the welcome page the mac is added to the allowed list and you can visit the pages on the web.

This works except
after visiting the welcomepage I can browse every page I want (like ispconfig.org) except the domain I tried to visit when the mac wasn't on the list.
I have to close the browser and restart to browse to http://www.howtoforge.com in this example

How to fix this?

 

Can you post the script here?

 

Code:

iptables -t nat -A PREROUTING -p tcp -i $INTERFACE --dport 80 -j REDIRECT --too-ports 80

cgi script

Code:

#!usr/bin/perl -w
use warnings;
use strict;
use CGI qw/:standard/;
my $URL = "http://192.168.0.1/index.html";
my $INTERFACE=eth0;
my $remote_ip = $ENV{'REMOTE_ADDR'};
open(LS, "sudo arp - na |");
while(<LS>){
   chop
   if($_ = ~/$remote_ip/) {
      my @lijst = split(/ /);
      system("sudo iptables -t nat -I PREROUTING -p tcp -i $INTERFACE -m mac --mac-source $lijst[3] - j ACCEPT");
      print "Status: 302 Moved\nLocation: $URL\n\n";
   }
}
close(LS);

 

I wonder if that has anything to do with your browser's cache. Have you tried to clear the browser cache?

 

Hi,

thanks for your reply.
Cleared the cache. Problem still there.
Also adding some vars like ?bla=1 to the url doesn't matter.
Is there a way to fix this problem?

 

Browsers tend to cache DNS info as well as images/files/etc. Try creating a new user or new profile for the after check...

 

same problem on fresh pc install.

 

other suggestions?

 

nice script and provide some other use full scripts like this.