[Dnsmasq-discuss] DHCP Option for HotSpot's

[Petr Menšík]

That is not entirely true. Captive portal can be done without any 
support in DHCP, but there is RFC support for DHCP:

https://www.rfc-editor.org/rfc/rfc8910.html#name-the-captive-portal-option

That option is useful for providing clients some expected URL.

DHCP option codes 114 (ipv4) and 103 (ipv6) are not recognized by 
dnsmasq. I think it would be good to be added.

On 29/05/2017 14:13, Leonardo Rodrigues wrote:
>
>     absolutely not related with DHCP. Yes you'll need DHCP on yout 
> hotspot, but the captive portal is in no way done by the DHCP service.
>
>     Google exactly for 'captive portal' and you'll find solutions for 
> that, lots free and paid options if you want to.
>
>
>
> Em 29/05/17 08:12, Jorge Bastos escreveu:
>> Howdy,
>>
>> I think this is done by DHCP, and if not let me know it.
>>
>> I want to put the some devices to open the browser to signin in my 
>> hotspot via captive portal.
>> That is, when the devices connect to the WIFI network, the browser 
>> automatically open's, this on smartphones/tablet/similar (i've seen 
>> windows doing it aswell).
>>
>> Is this done by an DHCP option, if yes any ideia on how to?
>
-- 
Petr Menšík
Software Engineer, RHEL
Red Hat, https://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB