Обсуждение: PgSQL behind a firewall

Hi all,

How can I connect to a remote database that is protected by a firewall. I`m
using Java and JDBC.
I try to sep up a SSL connection but didn't succeed.
Thanks!

Nico

Nicolas Milet wrote:
>
> Hi all,
>
> How can I connect to a remote database that is protected by a firewall. I`m
> using Java and JDBC.
> I try to sep up a SSL connection but didn't succeed.

You can open the port in the firewall (note that the world may acces your DB
now)
or use a ssh tunnel.

With kind regards / Mit freundlichem Gruß
    Holger Klawitter
--
Holger Klawitter
holger@klawitter.de                             http://www.klawitter.de

nmilet wrote:
>
> The question now is how can I set a ssh tunnel (I try to recompile postgres
> with openssl support
> but I did not succeed), and then can I use a ssh tunnel from Java (perharps
> yes by specifying the
> port number in connection).

That's not difficult:

1.) Establish a ssh connecton from the client formwaarding to the
    dbhost (port is the port number on the local host being forwarded):
    ssh -L port:dbhost:5432 dbhost
    or (as I regularly do)
    ssh -2 -n -N -L port:dbhost:5432 dbhost
    You'll probably have to set up some identities to make this
    work conveniently.

2.) Then you can connect to the remote database by using
    db = DriverManager.getConnection
         ( "jdbc:postgresql://localhost:"+port+"/"+dbname, user, pass );
    Where post is the local port and dbname is the (remove) database
    name.

With kind regards / Mit freundlichem Gruß
    Holger Klawitter
--
Holger Klawitter
holger@klawitter.de                             http://www.klawitter.de

The question now is how can I set a ssh tunnel (I try to recompile postgres
with openssl support
but I did not succeed), and then can I use a ssh tunnel from Java (perharps
yes by specifying the
port number in connection).

Thanks for idea.

Nicolas
"Le savant montre la lune, l'imbecile regarde le doigt"

----- Original Message -----
From: "Holger Klawitter" <lists@klawitter.de>
To: "Nicolas Milet" <nmilet@sympatico.ca>; <pgsql-general@postgreSQL.org>
Sent: Friday, September 28, 2001 3:47 AM
Subject: Re: [GENERAL] PgSQL behind a firewall


> Nicolas Milet wrote:
> >
> > Hi all,
> >
> > How can I connect to a remote database that is protected by a firewall.
I`m
> > using Java and JDBC.
> > I try to sep up a SSL connection but didn't succeed.
>
> You can open the port in the firewall (note that the world may acces your
DB
> now)
> or use a ssh tunnel.
>
> With kind regards / Mit freundlichem Gruß
>     Holger Klawitter
> --
> Holger Klawitter
> holger@klawitter.de                             http://www.klawitter.de
>
>