Another messy option is to save the user's UNIX credentails in their SAS Metadata profile, then configure your UNIX Workspace server with something like UNIXAuth authentication domain. Downside is that your user's will need to update their password in the SAS Metedata everytime it changes on UNIX, People will forget, sessions will fail, blah, blah.... Your security department might also not be happy about the fact that UNIX credentails are retained outside of UNIX, but again, like @PaulHomes said, they have to pick their battle. There are however different ways to encrypt the credentails (at rest and in motion) with SAS Secure to calm their fears.
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