Archive for October, 2011

PAM: Authenticate Linux / Unix Users against ActiveDirectory (without installing Unix Extensions)


If you’re going to deal with authentication of *x Systems against ActiveDirectory, you will need to install the Unix Extensions to your ActiveDirectory scheme to provide your accounts with proper UID-, GID- and SHELL variables. Unfortunately it is sometimes not applicable to install those extensions to your AD, especially when the companies core IT department is refusing to do so ( of course they might have their reasons ).

To resolve this issue, we decided to create a hybrid authentication scenario, featuring a local LDAP which stores the account information while checking the passphrase directly against the central AD infrastructure.

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