NFSv4 in a multi-realm environment

Configuring libnfsidmap to choose name<->id mapping functions, including cross realm remote user mapping

Name to ID mapping configuration

Setting up Kerberos 5 cross-realm support

Kerberos 5 setup

Setting up an LDAP server for name<->id mapping

LDAP Server setup

Setting up a client machine to use nss_ldap for name<->id mapping

LDAP Client setup