As per WP 13118 CDS remote logins now require LIGO.ORG Duo.  CDS has been disconnected from the older token authentication system.

Remote ssh users who have not transitioned to LIGO.ORG Duo will need to do so.  See https://cdswiki.ligo-wa.caltech.edu/wiki/LigoOrgDuoSetup

If you have issues with logging in please let one of the CDS admins know.