This module implements SecurID token checking. It should be listed in the "authenticate" section. The module configuration is in the "securid" file. You will need to copy it by hand to the raddb/modules/directory. There is a configure script, but you will most likely need to pass --with-securid-dir= argument. The files it requires are acexport.h and libaceclnt.so which should be located in the include and lib folders beneath . EMC/RSA do not distribute these files on their public website. You will need to request the AuthSDK from your EMC/RSA representative. Many people will wonder about the license issues involved in distributing this module. The short answer is that the source can be distributed, the binaries cannot be distributed. The explanation is given below. This module falls under the GPLv2 license. The primary goal of this license is largely to ensure that you have access to the source code, which is included here. A secondary goal of this license is to ensure that binary distributions can be re-built from the existing source code. This is done by requiring binary distributions to offer source code for the GPLd binary, and to distribute ALL DEPENDENT LIBRARIES. The RSA libraries are proprietary to RSA, and cannot be distributed. Therefore, any library (rlm_securid.a, rlm_securid.so, etc.) CANNOT be distributed by ANYONE. The module is still useful, of course. The GPL restriction on distribution apply only on distribution to third parties. This means that building the module, and using it within your organization is allowed under the GPL.