Hi, i'm a noob in this subject: does anyone have experience in integrating 2-factor-authentication with apache?

I'm thinking of installing certificates on my server and client certificates on my laptop. Besides the username and password, i'll be also using a one-time-password generated by a physical token/doggle to logon to my server for remote admin.

Can anyone shed a light or perhaps direct me to resources related to this subject?

Many thanks.


ps: The otp token/doggle i'm considering is Aladdin (available in singapore). Can anyone suggest otp doggle products available in malaysia?