There is one configuration file which you may wish to edit to control
various compile-time parameters in the Kerberos distribution:
include/krb5/stock/osconf.h. The list that follows is by no means
complete, just some of the more interesting variables.
Please note: The former configuration file
config.h no longer
exists as its functionality has been merged into the auto-configuration
process. See Options to Configure.
The profile file format is no longer the same format as Kerberos V4's
/etc/srvtab). The default is /etc/krb5.keytab.