Free/Open ACE Servers?

Tsk asks: "One of the companies I work for uses ACE server for which I need a SecurID. This works fine in closed source Unix environment, however at home I have a mix of closed source unix, free unixes and Windows machines. I would like to be abe to use my SecurID at home and thus secure my network. I'm trying to do this because I have a client that only has BSD/Linux servers, who would like to implement a SecureID based solution. I did a Google search already using 'ACE server Open' and 'ACE server Free' and received no results. I'm wondering if such setup is doable, if the software to build it is available?"