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Home » Kerio User Forums » Kerio Connect » Two-factor authentication (Google OTP) (Add another layer of security to the web interface (Admin or User))

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Hi all,

Since Google released their "OTP" (One-Time Password Authentication) source code a little while ago it became pretty easy to protect any web application (or others) by adding a third information on the login page. whatever you call it (pass-code, token, etc ..), it's changing every 30s and almost any decent phone can generate the "token", so only YOU can log in.

I've just implemented this solution to the IEM (Interspire Email Marketer) admin interface and it works lik a charm. Now I start to think that everywhere I have a web console I also want to have a Two-factor authentication, make sense right Smile

Since the webmail interface of kerio is running PHP, I know it's possible to implement it there as well but before throwing myself into it I wanted to share that little project with you and why not get a little help in the process.

I've started playing a little bit with the latest Kerio Connect web interface and it looks like the only file to modify is:

C:\Program Files (x86)\Kerio\MailServer\web\webmail\login\

I've been inspired few days ago by the following article (and are using their OTP PHP class) : tication-for-php

Based on what I did with Interspire I'm trying to recreate it with Kerio connect Webmail GUI.

so far:

- I've put the PHP class into C:\Program Files (x86)\Kerio\MailServer\web\webmail\login\
- I've added the line require_once("token.php"); after line 78
- I've added an extra field after the "password" so we can enter the Token

Everything works, but what I want to do now is check if the variable "kerio_token" = "$otp", and if not replace (on-the-fly) the username by something wrong ex: "xxxxxx" so if the token is wrong then the authentication will fail. Again that's maybe the not the best or the sexiest implementation yet but it definitely works on IEM so why bother finding another way to do it.

That's it fellas ... I'll be more than happy to exchange on the subject and of course try to find a way to implement it so the "Kerio Community" can benefit from it.

Over and Out,

[Updated on: Thu, 06 December 2012 22:30]

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