Hi, I am looking for the following scheme - when authentification is done by the master, and there is no authentification on slaves. Is this going to work? The use case is : we want to have unifirmly configured xrootd clusters, but some experiments (let's not laugh at them) want to have authentification. Couple of more question, now on Alice authentificaton. I remember someone said,that Alice authentification is alreadypackaged and distributed with xrootd, but I didn't find any docs on how to use it. More over, it seems that Alice auth plugin is specified as fslib, not as seclib. So, see again the frirst question - is this going to work, if master has one fslib plugin, but slaves have different? And if I don't trust your responce :) , is there some doc on how to use Alice uathentification? (I hope all relevant Alice people are on this list) Thanks, Artem.