Hi all,

 

I am trying to add a splash page/ wifi landing page/ wifi agreement page 
(or whatever the name is) to my network by modifying my dns server.

We know this is not the so call "correct" way to do it, and will not block 
attacks in a meaningful way. (as they can always use a better DNS server)

 

Here is how my implementation works:

1) DHCP point device to use my DNS server

2) DNS server reslove all request as an local ip address, in which it host 
a web server for the agreement page

3) After user agree to the terms, DNS server will start resloving the 
request correctly, thus, user will be able to get to the web

 

It works on computers, however, when I tested it on Android devices, here's 
what happen

1) connect Android to wifi network

2) Android tried resolve a number of sites to determine if the system has 
internet connection

3) DNS server reslove all these request as a local web server's ip address, 
with ttl=1

4) splash page comes up on iPhone

5) user click I agree, and DNS server starts giving out correct ip, the 
page also redirect user to an internet address

These all works as expected, however, the splash page does not go away 
after connect.

The user would have to click the option: use this network without internet 
access (or something like that) to dismiss the page. (Clicking home here 
will results in disconnecting from the network)

 

I wonder if there is a special (javascript?) method I can call in the page, 
or some package I need to send to the device?

 

Thanks a lot,

Kyle

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