<div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">Aah ok !</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">Unfortunately I'm using Amazon Linux and it does not support SSSD. I ended up using nss-pam-ldap, nscd and nslcd. </div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">However this looks promising. Only for the servers exposed to Internet I could use CentOS/Fedora and this method of authentication. Let me try this and come back to you. </div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">Thanks.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">--Prashant</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 27 June 2015 at 10:17, Alexander Bokovoy <span dir="ltr"><<a href="mailto:abokovoy@redhat.com" target="_blank">abokovoy@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><br>
<br>
----- Original Message -----<br>
> Hi ,<br>
><br>
> I'm exploring implementing a 2FA solution to my servers exposed to public.<br>
> Mainly to secure SSH with 2FA. The SSH keys and users are already in<br>
> FreeIPA.<br>
><br>
> Is there a way to utilize the OTP inside FreeIPA during a user login to these<br>
> servers ? A user will have to enter the TOTP code bases on whats configured<br>
> in FreeIPA. Something along the lines of<br>
> <a href="https://github.com/google/google-authenticator/tree/master/libpam" rel="noreferrer" target="_blank">https://github.com/google/google-authenticator/tree/master/libpam</a><br>
</div></div>If you are using SSSD (pam_sss), it will automatically accept 2FA.<br>
<br>
You need to force OpenSSH to combine authentication methods, something like:<br>
<br>
AuthenticationMethods publickey,password:pam publickey,keyboard-interactive:pam<br>
<br>
Look into sshd_config manual page for details. This is feature of OpenSSH 6.2 or later.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
/ Alexander Bokovoy<br>
</font></span></blockquote></div><br></div>