Overriding proxy response

[Johan Meiring]

Ivan Kalik wrote:
>>> And how is user supposed to open that "topup page" if he is looking for
>>> Google, for instance?
>> Instead of Google's IPs your DNS servers would return your web server,
>> with
>> the "topup page".
>>
>> What you want *is* a captive portal - it will
>>> capture the user and redirect him from the requested page onto the one
>>> you
>>> want him to see.
>>>
>> I didn't say I agree with the DNS scheme.
>> I do agree that a captive portal is the best solution.
>> I was simply mentioning that it is not always possible.
> 
> It is possible - that's what you are making. DNS scheme is not going to
> work. All user has to do to defeat that is to change the assigned DNS
> servers - and he can surf the net. You need a proper captive portal where
> user can't simply change DNS info and/or assigned IP and escape.
> 

Our local telco includes a filter for you as well, with the DNS scheme, so 
the client can only reach your topup server.

-- 


Johan Meiring
Cape PC Services CC
Tel: (021) 883-8271
Fax: (021) 886-7782