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