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1. Postgresql Ssl Client Certificate Template
2. Ssl Client Certificate Is Required
3. Install Ssl Client Certificate

• # To simplify the connection, let's use the default names cp ca-cert.pem root.crt cp client-cert.pem postgresql.crt cp client-key.pem postgresql.key # Set permissions chmod -R 600./ # Test the certificate openssl verify -CAfile root.crt postgresql.crt You can now connect to the remote server.
• PostgreSQL has native support for using SSL connections to encrypt client/server communications for increased security. See Section 17.9 for details about the server-side SSL functionality. Libpq reads the system-wide OpenSSL configuration file. By default, this file is named openssl.cnf and is located in the directory reported by openssl version -d.

I am trying to connect to my PostgreSQL server but psql is complaining that I don't have a valid client certificate. Here is how I create my certificates:

Self-signed server certificate:

Client certificate:

Configuring the Client. Using SSL without Certificate Validation; Custom SSLSocketFactory; Configuring the Server. Configuring the PostgreSQL™ server for SSL is covered in the main documentation, so it will not be repeated here. Before trying to access your SSL enabled server from Java, make sure you can get to it via psql. You should see.

Postgresql Ssl Client Certificate Template

After copying the necessary files (client.crt, client.key, root.crt) onto the client machine and changing permission (i.e., chmod og-rwx client.key), I do the following:

and then I get:

Am I doing the client certificate signing process wrong?

Thanks,

#Edit

I tried:

and I get:

Using Wireshark, here is the capture I got for the communication between the client (192.168.0.103) and the server (192.168.0.100):

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Do you know how to make sense of this?

#Edit 2

Okay, I did what you said, and it seems like the server does not send the CertificateRequest message to the client. as you can see below:

but this is weird because in pg_hba.conf, I have:

What do you think?

#Edit3 (SOLVED!)

I changed the pg_hba.conf to contain:

and changed postgresql.conf to add in the 'Security and Authentication' section:

AND IT WORKED! Thank you so much!

1 Answer

In this situation I tend to pull out Wireshark and snoop the SSL negotiation to make sure the client certificate is really being offered by the client.

I suggest using openssl to verify the client->root signing link, too.

Edit: It's necessary to specify clientcert=1 even when cert authentication is chosen. Yes, that's weird.

Ssl Client Certificate Is Required

Install Ssl Client Certificate

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