Save the changes you made to the file and close it.as any dependencies they may require such as the Microsoft SQL ODBC driver. Add the IP addresses of connecting client machines and the client authentication methods used for connections. Most of the configuration options within this file are driven by the values.Start Notepad or another text editor application and open the pg_hba.conf file from the PostgreSQL installation directory. Start PgAdminIII, connect to the PostgreSQL instance as the postgres super user, connect to the database, click Tools, point to Server Configuration, then click pg_hba.conf.Open the pg_hba.conf file by doing one of the following: Devart ODBC Drivers are high-performance connectivity solutions with enterprise-level features for accessing the most popular database management systems and cloud services from ODBC-compliant reporting, analytics, BI, and ETL tools on 32-bit and 64-bit Windows, macOS, and Linux.Make a backup copy of the pg_hba.conf file before you alter it.You can either alter the pg_hba.conf file directly by opening it in a text editor, or you can alter the pg_hba.conf file through PgAdminIII. PostgreSQL is installed on a Windows server Use pg_ctl to start (or restart) the PostgreSQL postmaster.If your PostgreSQL database cluster is set up on a machine that has an IPV6 address and you want machines with an IPV4 address to connect to it, you need to uncomment the following line in the pg_hba.conf file: To allow any machines with an address beginning with fe60 to connect, you would add this line to the pg_hba.conf file: If you need to configure the database cluster to accept connections from machines with an IPV6 address, the format would be as follows: The preceding examples were for IPV4 addresses. If you want to allow all users who supply a valid password to connect to any of the databases on the PostgreSQL instance from addresses beginning with 100, you would add a line similar to the following to the pg_hba.conf file: For example, to allow any user who supplies a valid password to connect to a database named habitat from addresses beginning with 10.2.12 using an md5 connection, add the following line to the pg_hba.conf file:
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