Hi,
We are in the process of integrating Symantec DLP with DUO for two factor authentication. We are trying to use the Authproxy via LDAP to implement the same.
We require some proper steps to perform this activity.
Everything I've read suggests that Symantec Data Loss Prevention 14.X does not support two-factor authentication for Enforce console login at this time. I recommend submitting an enhancement request for this feature to be added.