Add the EOS instance to which the authentication XRootD server connects as a
parameter in the configuration file with the following signature:
eosauth.instance eos_xyz:5555
Note that the port here is the one on which the ZMQ sockets is awaiting connections
and not the default XRootD port. Add also the number of sockets used for sending
request to the EOS instance as a parameter to the configuration file - the default
value is 10 sockets:
eosauth.numsockets 10