[isf-wifidog] Coova + WifiDog - Need no internet page

Genevieve Bastien gbastien at versatic.net
Mer 4 Aou 09:58:22 EDT 2010

Hi Jason,

> Situation 1
> The auth server is down page is displayed as expected
The page that is shown there is the green page saying "Uh ohhh  internet 
not available", right?  This page resides on the gateway and is the file 

> Situation 2
> The client connects to the hotspot and then tries to go to the browser 
> default page,for example www.google.con.au 
> <http://www.google.con.au>.  The client gets a Server not found error 
> in their browser.  I would like to have the Auth server is down page 
> displayed.  I believe what I am seeing is due to the DNS lookup 
> failure.  Is there away around this?  Since the user is not 
> authenticated yet, i would of thought all requests would be redirected 
> without doing a DNS lookup.  Have I miss-understood this?
> Situation 3
> The client is browsing the internet and the internet connection goes 
> down.  I would to show the internet down page when they request their 
> next page.
Indeed, there is no internet is down page.  Actually, I think the 
gateway is not involved at all before the dns is resolved, so that it 
isn't caught by the rule that shows the internet unavailable page.

But that would certainly be a nice feature to add.  I guess it would 
involve some iptables set by the gateway when internet is down.  If the 
gateway doesn't catch the request for dns lookup, at least the firewall 
will and will display the page...

Or modify the gateway so that the dns lookup request is caught and the 
error page is shown.  Because the code to display the message in 
situation 2 and 3 is there, it is just never called...

Hope this helps,
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