Chapter 3 System Preparation170 September 2002 HPSS Installation GuideRelease 4.5, Revision 2The Realms to DCE Cell Mappings = { … } stanza contains one or more substanzas providingKerberos Realm to DCE Cell Mappings. The substanza(s) are used to specify the appropriatemappings.Realms to DCE Cell Mappings specific rules:For security reasons, only the HPSS.conf in either the path specified by the HPSS_PATH_ETCenvironment variable or /var/hpss/etc may be used. The HPSS.conf file must be owned by root andcannot be writeable by group or other. NOTE: if HPSS_PATH_ETC refers to an NFS mounteddirectory and root is not allowed access as root, the lookup will fail.Realms to DCE Cell Mappings Example:; Interface Specification (MUST be dot Notation)Realms to DCE Cell Mappings = {; Kerberos Realm = DCE Cell Namekerberos.realm.name = /.../dce.cell.name}3.7.1.5 Network Option StanzaThe Network Options are in the Network Options = { … } stanza of the HPSS.conf file.The Network Options stanza allows different options to be specified based on: Source IP address[ Local Interface Name(s) ] AND Destination IP Address(es). When the Parallel FTP Client, ClientAPI, or Mover establish connections, they will search the contents of this file for entries matchingSource/Destination IP addresses and use the options specified in the matching entry.The configuration file entries contain values/flags to be used for applying assorted socket andnetwork options including: whether to enable/disable TCP Delay (TcpNoDelay), the socket sendsizes (SendSpace) and/or socket receive sizes (RecvSpace), the desired write buffer size(WriteSize), and RFC1323 support (“Large” Window.)Which configuration entry to use is determined based on the Local Interface Name and theDestination IP address “masked” by the NetMask value. The calling application (PFTP Client,Client API, or Mover) will apply the value of the NetMask specification in the configuration fileSubStanza = | E.g. Kerberos.Realm = /…/my_dce_cellContains Kerberos Realms and their associated DCE Cell Names.Table 3-5 Realms to DCE Cell Mappings Stanza Fields
