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+.\" This is -*-nroff-*-
+.\" XXX standard disclaimer belongs here....
+.\" $Header: /cvsroot/pgsql/doc/man/Attic/pg_hba.5,v 1.1.1.1 1996/08/18 22:14:26 scrappy Exp $
+.TH PG_HBA FILES 01/20/96 Postgres95 Postgres95
+.SH NAME
+$PGDATA/pg_hba \(em host-based access control
+.SH DESCRIPTION
+Postgres provides host-based access control through the file
+.BR "pg_hba".
+This file is stored in $PGDATA and should have proper file permissions
+so that casual users cannot modify it.  The file stores permissions
+information about which hosts are authorized to access databases.
+.PP
+The file consists of lines of three columns.  The first column lists the
+name of the database.  The second column lists the IP address of clients
+machines that are authorized to connect, and the third column provides a
+bit mask for the IP address.  Lines which begin with '#' are considered
+comments. 
+.PP
+The keyword "all" can be used to apply to all database names.  Each
+column can contain strings of at most 80 characters, and each database
+may have up to 255 configuration lines that apply.  (80 and 255 are
+constants that can be changed at Postgres compile time by altering the
+#defines MAX_TOKEN and MAX_LINES in src/backend/libpq/auth.c)
+.PP
+Below is the default pg_hba file that is installed.
+.nf
+#
+# Example config file for Postgres95 host based access
+#
+# Lines starting with "all" apply to all databases.  Otherwise the first
+# column has to match the name of the database being connected to.  Up to
+# ten config lines can apply to each database.  Mask specifies bits that 
+# aren't counted. After those bits are taken out, the connection address 
+# must match the address in the middle column.
+#
+# <name>	<address>	<mask>
+#
+all		127.0.0.1	0.0.0.0
+.fi
+.SH "SEE ALSO"
+introduction(1).
+