Re: 2FA with Google Authenticator and squid login

On 3/02/25 00:43, NgTech LTD wrote:
> What would make  a 2fa in squid case?
> 


When receiving a new login attempt the authentication (auth_param) 
helper should initiate whatever side-channel token delivery is needed. 
Then return "ERR" to Squid as usual.


Replace the login challenge error message with a login page to receive 
that token and deliver it to a server that marks the client as logged 
in. (Both ERR_ACCESS_DENIED and ERR_CACHE_ACCESS_DENIED. Either new 
templates or a deny_info 401/407 - I'm not sure which will work best)


Somewhat like how the SQL_session helper works in "active mode" session, 
but through the auth_param helpers instead of external ACL sessions.


HTH
Amos


> Thanks,
> Eliezer
> 
> בתאריך יום א׳, 2 בפבר׳ 2025, 13:22, מאת Amos Jeffries 
> ‏<[email protected] <mailto:[email protected]>>:
> 
>     On 2/02/25 07:43, ngtech1ltd wrote:
>      > Hey,
>      >
>      > I was wondering if anyone have implemented any 2FA with squid.
>      >
>      > IE a simple forward proxy that implements an external ACL helper
>     that
> 
>     Ah, that would not be "authentication".
> 
> 
>     2FA is done through Squid auth_param and authentication helpers same as
>     "normal" (1FA) authentication. It is just a slightly different bunch of
>     steps the auth system performs in the background outside of Squid.
> 
> 
>     Cheers
>     Amos
> 
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