ok. I tried that url: http://tds.ucar.edu/thredds/fileServer/datazone/cmip5_data/cmip5/output1/NCAR/CCSM4/decadal1961/fx/atmos/fx/r0i0p0/v20130313/areacella/areacella_fx_CCSM4_decadal1961_r0i0p0.nc but of course I could not go past the openid page. For what its worth, tds supports two kinds of authorizations: tomcat level and spring level (see TomcatAuthorizer.java). If I understand correctly, you have added a third level of custom authorization based on openid. From my point of view, it would be desirable to handle openid programmatically using our existing mechanisms (see docs/website/netcdf-java/reference/httpservices.adoc), but that requires that the whole process be handled programmatically. =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: XWZ-975614 Department: Support THREDDS Priority: Normal Status: Open =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.