Allowing client access

From: Timmy Siu <timmy(dot)siu(at)aol(dot)com>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Allowing client access
Date: 2019-10-09 12:33:41
Message-ID: d08c493f-9845-2ab6-c0e3-6e0044eec452@aol.com
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Dear All Users,

* How do I allow an external client IP address access to my pgsql server?

According to my own experience and test, if I set the external client IP
address to, for example, 111.222.333.444 in the file
/etc/postgresql/11/main/pg_hba.conf, it will not be able to connect to
the server:
#TYPE?????? DATABASE?????? ?? USER?????? ?????? ?????? ADDRESS?????? ?????? ?????? METHOD
host?????? all?????? ?????? ?????? testuser 111.222.333.444 md5

I must set "address" to "any" as in the following:
#TYPE?????? DATABASE?????? ?? USER?????? ?????? ?????? ADDRESS?????? ?????? METHOD
host?????? all?????? ?????? ?????? testuser ???? ?????? 0.0.0.0/0?????? ?? md5

* Can I limit access to my pgsql server through TCP Wrapper? What is
the related executable?

Regards,
Timmy

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