TIP cacert.org SSL certificates

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Tips

Using cacert.org SSL certificates with Apache

Configuring

Other

edit

[edit] Introduction

This HOWTO is aimed at using SSL certificates from http://www.cacert.org

[edit] Requirements

You must already have an account with cacert.org

[edit] Installing

[edit] Apache 2.x

Generate a new csr (certificate signing request). (Example for example.org)

wget http://svn.cacert.org/CAcert/CSRGenerator/csr
sh csr

And it looks something like this.

 example@example ~ $ sh csr
 Private Key and Certificate Signing Request Generator
 This script was designed to suit the request format needed by
 the CAcert Certificate Authority. www.CAcert.org
 Short Hostname (ie. imap big_srv www2): example
 FQDN/CommonName (ie. www.example.com) : example.org
 Type SubjectAltNames for the certificate, one per line. Enter a blank line to finish
 SubjectAltName: DNS:example.org
 SubjectAltName: DNS:www.example.org
 SubjectAltName: DNS:foo.example.org
 SubjectAltName: DNS:www.foo.example.org
 SubjectAltName: DNS:bar.example.org
 SubjectAltName: DNS:www.bar.example.org
 SubjectAltName: DNS:example.bar
 SubjectAltName: DNS:www.example.bar
 SubjectAltName: DNS:
 Running OpenSSL...
 Generating a 2048 bit RSA private key
 ........................................................+++
 ................................................+++
 writing new private key to '/home/chris/example_privatekey.pem'
 -----
 Copy the following Certificate Request and paste into CAcert website to obtain a Certificate.
 When you receive your certificate, you 'should' name it something like example_server.pem
 -----BEGIN CERTIFICATE REQUEST-----
 MIIDBjCCAe4CAQAwFjEUMBIGA1UEAxMLZXhhbXBsZS5vcmcwggEiMA0GCSqGSIb3
 DQEBAQUAA4IBDwAwggEKAoIBAQClsXcoj86dyYlIe96khbZqYtyV03ak+teyClv5
 80I46irKcYQx4CFiirTCuusiAwsDfnDyZvnrwoxaUkc5nkw4Tlmb1j/y91U8rusX
 Zu43rep8s0zs7aMx/q34TTCc5Mru8UQjbnj9aCX1DF+8cA0ayQMm1BOFv8nTFcjK
 SnI5NdxRKDyqeH3KUgfxgGkBVU4VFVRU9XKD/zprzj+hWFT+fsjF7yQm0ZXDXaJ+
 0Yr9mDQjfzdLP3GObc7y7rwz8a5ozATwfpqZiWYjM34oKFPSj7kwLdA+otx0glGG
 e+P7G/E2uE+lbzi41CSFgKAjw3E0l1x47NoVD6DADS5mYIatAgMBAAGggaowgacG
 CSqGSIb3DQEJDjGBmTCBljCBkwYDVR0RBIGLMIGIggtleGFtcGxlLm9yZ4IPd3d3
 LmV4YW1wbGUub3Jngg9mb28uZXhhbXBsZS5vcmeCE3d3dy5mb28uZXhhbXBsZS5v
 cmeCD2Jhci5leGFtcGxlLm9yZ4ITd3d3LmJhci5leGFtcGxlLm9yZ4ILZXhhbXBs
 ZS5iYXKCD3d3dy5leGFtcGxlLmJhcjANBgkqhkiG9w0BAQQFAAOCAQEAHFiUDgVc
 lDGoq+2kLmQxKtYagc37sugw4OoutILxrXF0zJUSplF4Aco/KhBcSLQUpsW5u11Q
 tcxj4DqXrxsoZuawATKTGQXDaAxL/ud2FsXyhe2FC1h0id2cH12GsnDSziuFCM+t
 rz05dqnW6mZR5OHILlYPoIPNqk3tbkIyOs4GplL9PZLNjSKJ3oeXJXn1iSI6oegB
 dBJQMByDZsh7Xd/d1OFJMQq3TFMqmLEXErkXQnOmzBN375AHGYGZwozhVPjhfFZ1
 74AvmxOe17+OLm1j10EA9J/5jLzIgK0vs7HgK0131S/JAV4Ik9JccAWByGlxeuVb
 4Kf5vAucZZVe7g==
 -----END CERTIFICATE REQUEST-----
 The Certificate request is also available in /home/example/example_csr.pem
 The Private Key is stored in /home/example/example_privatekey.pem

Copy the request and use this on the cacert.org webpage. Now put the server certificate that is created into a file /home/example/example_cert.pem.

 example@example ~ $ cat > /home/example/example_cert.pem
 <paste output from cacert.org webpage into term>
 <ctrl + d key> (this tells cat to quit and save it must be done from a empty line)
 example@example ~ $ mv /home/example/example_{privatekey,cert}.pem /etc/apache2/ssl/

[edit] Configuring

[edit] Apache 2.2.x

Edit /etc/apache2/vhosts.d/00_default_ssl_vhost.conf.

File: /etc/apache2/vhosts.d/00_default_ssl_vhost.conf

<VirtualHost _default_:443>
        ServerName example.org
        ServerAlias www.example.org
...
        SSLEngine on
        # Following 2 lines disable the weaker/older ciphers/protocol. 
        # Use with caution (older browsers and such).
        SSLCipherSuite HIGH:MEDIUM
        SSLProtocol all -SSLv2

        SSLCertificateFile /etc/apache2/ssl/example_cert.pem
        SSLCertificateKeyFile /etc/apache2/ssl/example_privatekey.pem
...
        # Uncommenting this is a good idea as long as you know what it means (line 128)
        SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire 
...

For custom configs edit the section within your VirtualHost tags for the SSL host