Re: How to deny access to Postgres when connected from host/non-local

On 4/2/21 7:06 PM, A. Reichstadt wrote:
> Hello,
> 
> I try to deny access to all databases on my server if the user “postgres" tries 
> to connect from a non-local host. Here is what I did in pg_hba.conf:
> 
> 
> # TYPE  DATABASE        USER            ADDRESS                 METHOD
> 
> # "local" is for Unix domain socket connections only
> local   all             all                                     md5
> # IPv4 local connections:
> host    all             all             127.0.0.1/32            md5
> # IPv6 local connections:
> host    all             all             ::1/128                 md5
> # Allow replication connections from localhost, by a user with the
> # replication privilege.
> local   replication     all                                     md5
> host    replication     all             127.0.0.1/32            md5
> host    replication     all             ::1/128                 md5
> host    all             all             0.0.0.0/0               md5
> local   all             postgres                                trust
> host    all             postgres        0.0.0.0/0               reject
> 
> 
> But it continues to allow for Postgres to connect from anywhere through PGAdmin 
> but also as a direct connection to port 5432. I also relaunched the server. This 
> is version 12.
> 
> What else do I have to do?
> 
> Thanks for any help.

See:
https://www.postgresql.org/docs/13/auth-pg-hba-conf.html

In particular:

   "Each record specifies a connection type, a client IP
    address range (if relevant for the connection type),
    a database name, a user name, and the authentication
    method to be used for connections matching these
    parameters. The first record with a matching
    connection type, client address, requested database,
    and user name is used to perform authentication."

So your reject line is never being reached.

HTH,

Joe

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