#
-# Example PostgreSQL host access control file.
+#
+# PostgreSQL HOST ACCESS CONTROL FILE
#
#
# This file controls what hosts are allowed to connect to what databases
-# and specifies some options on how users on a particular host are identified.
-# It is read each time a host tries to make a connection to a database.
-#
-# Each line (terminated by a newline character) is a record. A record cannot
-# be continued across two lines.
+# and specifies some options on how users on a particular host are
+# identified. It is read each time a host tries to make a connection to a
+# database.
+#
+# Each line (terminated by a newline character) is a record. A record
+# cannot be continued across two lines.
#
# There are 3 kinds of records:
#
#
# 2) empty: Contains nothing excepting spaces and tabs.
#
-# 3) content: anything else.
-#
-# Unless specified otherwise, "record" from here on means a content
-# record.
+# 3) record: anything else.
#
-# A record consists of tokens separated by spaces or tabs. Spaces and
+# Only record lines are significant.
+#
+# A record consists of tokens separated by spaces or tabs. Spaces and
# tabs at the beginning and end of a record are ignored as are extra
# spaces and tabs between two tokens.
-#
-# The first token in a record is the record type. The interpretation of the
-# rest of the record depends on the record type.
-#
+#
+# The first token in a record is the record type. The interpretation of
+# the rest of the record depends on the record type.
+
+
# Record type "host"
# ------------------
#
-# This record identifies a set of network hosts that are permitted to connect
-# to databases. No network hosts are permitted to connect except as specified
-# by a "host" record. See the record type "local" to specify permitted
-# connections using UNIX sockets.
+# This record identifies a set of network hosts that are permitted to
+# connect to databases. No network hosts are permitted to connect except
+# as specified by a "host" record. See the record type "local" to specify
+# permitted connections for local users via UNIX domain sockets.
#
# Format:
#
# host DBNAME IP_ADDRESS ADDRESS_MASK AUTHTYPE [AUTH_ARGUMENT]
#
-# DBNAME is the name of a PostgreSQL database, "all" to indicate all
-# databases, or "sameuser" to restrict a user's access to a database
-# with the same user name.
-#
-# IP_ADDRESS and ADDRESS_MASK are a standard dotted decimal IP address and
-# mask to identify a set of hosts. These hosts are allowed to connect to
-# Database DBNAME.
-#
-# AUTHTYPE is a keyword indicating the method used to authenticate the
-# user, i.e. to determine that the principal is authorized to connect
-# under the PostgreSQL username he supplies in his connection parameters.
-#
-# ident: Authentication is done by the ident server on the remote
-# host, via the ident (RFC 1413) protocol. AUTH_ARGUMENT, if
-# specified, is a map name to be found in the pg_ident.conf file.
-# That table maps from ident usernames to PostgreSQL usernames. The
-# special map name "sameuser" indicates an implied map (not found
-# in pg_ident.conf) that maps every ident username to the identical
-# PostgreSQL username.
+# DBNAME is the name of a PostgreSQL database, "all" to indicate all
+# databases, or "sameuser" to restrict a user's access to a database with
+# the same user name.
#
-# trust: No authentication is done. Trust that the user has the
-# authority to use whatever username he specifies. Before
-# PostgreSQL version 6, all authentication was done this way.
-#
-# reject: Reject the connection.
-#
-# password: Authentication is done by matching a password supplied in clear
-# by the host. If AUTH_ARGUMENT is specified then the password
-# is compared with the user's entry in that file (in the $PGDATA
-# directory). See pg_passwd(1). If it is omitted then the
-# password is compared with the user's entry in the pg_shadow
-# table.
-#
-# crypt: Authentication is done by matching an encrypted password supplied
-# by the host with that held for the user in the pg_shadow table.
-#
-# krb4: Kerberos V4 authentication is used.
-#
-# krb5: Kerberos V5 authentication is used.
+# IP_ADDRESS and ADDRESS_MASK are a standard dotted decimal IP address
+# and mask to identify a set of hosts. These hosts are allowed to connect
+# to Database DBNAME. There is a separate section about AUTHTYPE below.
+
# Record type "hostssl"
# ---------------------
#
+# The format of this record is identical to that of "host".
+#
# This record identifies the authentication to use when connecting to a
# particular database via TCP/IP sockets over SSL. Note that normal
# "host" records are also matched - "hostssl" records can be used to
-# require a SSL connection.
-# This keyword is only available if the server is compiled with SSL support
-# enabled.
-#
-# The format of this record is identical to that of "host".
+# require a SSL connection. This keyword is only available if the server
+# is compiled with SSL support enabled.
+
# Record type "local"
# ------------------
#
# local DBNAME AUTHTYPE [AUTH_ARGUMENT]
#
-# The format is the same as that of the "host" record type except that the
-# IP_ADDRESS and ADDRESS_MASK are omitted and the "ident", "krb4" and "krb5"
-# values of AUTHTYPE are not allowed.
+# The format is the same as that of the "host" record type except that
+# the IP_ADDRESS and ADDRESS_MASK are omitted. Local supports only
+# AUTHTYPEs "trust", "password", "crypt", and "reject".
-# For backwards compatibility, PostgreSQL also accepts pre-version 6 records,
-# which look like:
-#
-# all 127.0.0.1 0.0.0.0
+# Authentication Types (AUTHTYPE)
+# -------------------------------
+#
+# AUTHTYPE is a keyword indicating the method used to authenticate the
+# user, i.e. to determine that the user is authorized to connect under
+# the PostgreSQL username supplied in his connection parameters.
+#
+# trust: No authentication is done. Trust that the user has the
+# authority to use whatever username he specifies.
+#
+# password: Authentication is done by matching a password supplied
+# in clear by the host. If AUTH_ARGUMENT is specified then
+# the password is compared with the user's entry in that
+# file (in the $PGDATA directory). See pg_passwd(1). If it
+# is omitted then the password is compared with the user's
+# entry in the pg_shadow table.
+#
+# crypt: Same as 'password', but authentication is done by
+# encrypting the password sent over the network.
+#
+# ident: Authentication is done by the ident server on the remote
+# host, via the ident (RFC 1413) protocol. AUTH_ARGUMENT,
+# if specified, is a map name to be found in the
+# pg_ident.conf file. That table maps from ident usernames
+# to PostgreSQL usernames. The special map name "sameuser"
+# indicates an implied map (not found in pg_ident.conf)
+# that maps every ident username to the identical
+# PostgreSQL username.
+#
+# krb4: Kerberos V4 authentication is used.
+#
+# krb5: Kerberos V5 authentication is used.
+#
+# reject: Reject the connection.
+
+
+# Examples
+# --------
+#
# TYPE DATABASE IP_ADDRESS MASK AUTHTYPE MAP
-
+#
#host all 127.0.0.1 255.255.255.255 trust
-
-# The above allows any user on the local system to connect to any database
-# under any username.
-
+#
+# The above allows any user on the local system to connect to any
+# database under any username.
+#
#host template1 192.168.93.0 255.255.255.0 ident sameuser
-
+#
# The above allows any user from any host with IP address 192.168.93.x to
-# connect to database template1 as the same username that ident on that host
-# identifies him as (typically his Unix username).
-
+# connect to database template1 as the same username that ident on that
+# host identifies him as (typically his Unix username).
+#
+#host template1 192.168.12.10 255.255.255.255 crypt
+#
+# The above allows a user from host 192.168.12.10 to connect to
+# database template1 if the password assigned to that user is
+# supplied. User passwords are optionally assigned when a
+# user is created.
+#
#host all 192.168.54.1 255.255.255.255 reject
#host all 0.0.0.0 0.0.0.0 trust
-
-# The above would allow anyone anywhere except from 192.168.54.1 to connect to
-# any database under any username.
-
+#
+# The above would allow anyone anywhere except from 192.168.54.1 to
+# connect to any database under any username.
+#
#host all 192.168.77.0 255.255.255.0 ident omicron
#
# The above would allow users from 192.168.77.x hosts to connect to any
# database, but if Ident says the user is "bryanh" and he requests to
# connect as PostgreSQL user "guest1", the connection is only allowed if
-# there is an entry for map "omicron" in pg_ident.conf that says "bryanh" is
-# allowed to connect as "guest1".
+# there is an entry for map "omicron" in pg_ident.conf that says "bryanh"
+# is allowed to connect as "guest1".
+#
-# By default, allow anything over UNIX domain sockets and localhost.
+# By default, allow anything over UNIX domain sockets and localhost.
local all trust
host all 127.0.0.1 255.255.255.255 trust
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