You can use self-signed SSL certificate for WordPress admin.

1. Home-made Self-Signed SSL Certificate

1.1, Use this command to generate a private key.

openssl genrsa -des3 -out www.my-whiteboard.com.key 1024

Generating RSA private key, 1024 bit long modulus
..++++++
.......++++++
e is 65537 (0×10001)
Enter pass phrase for www.my-whiteboard.com.key:
Verifying - Enter pass phrase for www.my-whiteboard.com.key:

1.2 Generate a CSR (Certificate Signing Request)

openssl req -new -key www.my-whiteboard.com.key -out www.my-whiteboard.com.csr

Enter pass phrase for www.my-whiteboard.com.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
----
Country Name (2 letter code) [AU]:US
State or Province Name (full name) [Some-State]:Maryland
Locality Name (eg, city) []:Rockville
Organization Name (eg, company) [Internet Widgits Pty Ltd]:www.my-whiteboard.com
Organizational Unit Name (eg, section) []:IT Services
Common Name (eg, YOUR name) []:www.my-whiteboard.com
Email Address []:xxx@gmail.comPlease enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:my-whiteboard.com

1.3 Remove Passphrase from Key

openssl rsa -in www.my-whiteboard.com.key_orig -out www.my-whiteboard.com.key

Enter pass phrase for www.my-whiteboard.com.key_orig:
writing RSA key

1.4, Create a self-signed certificate

openssl x509 -req -days 3650 -in www.my-whiteboard.com.csr -signkey www.my-whiteboard.com.key -out www.my-whiteboard.com.crt


Signature ok
subject=/C=US/ST=Maryland/L=Gaithersburg/O=www.my-whiteboard.com/OU=IT Services/CN=www.my-whiteboard.com/emailAddress=xxx@gmail.com
Getting Private key

1.5 Edit your Apache server’s ssl.conf file, add the following lines for your web site (virtualhost configuration).

<VirtualHost 100.101.102.103:443>
ServerName www.my-whiteboard.com
DocumentRoot /home/xxx/webapps
SuexecUserGroup root root
Options Indexes Includes FollowSymLinks
ServerAlias "mail.my-whiteboard.com" "ftp.my-whiteboard.com"
ServerAdmin "xxxx@gmail.com"
DirectoryIndex index.html index.php index.jspErrorLog logs/ssl_error_log
TransferLog logs/ssl_access_log
LogLevel warnSSLEngine on
SSLCertificateFile /home/xxx/www.my-whiteboard.com.crt
SSLCertificateKeyFile /home/xxx/www.my-whiteboard.com.key
SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown <Directory "/home/xxx/webapps">
Options Indexes Includes FollowSymLinks
DirectoryIndex index.html index.php index.jsp
#Options +Includes
#AllowOverride None
AllowOverride All
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]
</Directory></VirtualHost>

1.6, Restart Apache

apachectl restart

ps -ef |grep httpd

apache 4345 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4346 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4347 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4348 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4349 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4350 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4351 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd
apache 4352 3197 0 09:32 ? 00:00:00 /usr/sbin/httpd

2. Install WordPress SSL Plugin for Secure-Admin

2.1, Download WordPress SSL Plugin for Secure-Admin from http://haris.tv/.

2.2, Extract the zip file and copy secure-admin.php to the /wp-content/plugins/ directory.

2.3, Log into the WordPress admin panel and click on the Plugins button

2.4, Locate the secure-admin listing and click Activate

3. Test ssl web connection

https://www.my-whiteboard.com

Because the certificate was not generated from Trusted CA root certificates and does not offer any third-party proof to validate your site’s identity, most browsers will show warning/error message similar to these.