SSL Certificate by GeoTrust not working

It's pretty simple to have a different cert for a different IP address; just put the SSL cert stuff inside the virtualhosts for each.

Having multiple virtualhosts on a single IP won't really work at this point. There's some technologies that might work for that down the road, but the user population isn't running browsers that can do it. The user agent (browser) establishes an SSL connection and verifies the SSL connection before telling the server what host it's connecting to. You really need a separate IP for each SSL virtualhost.

<VirtualHost 1.1.1.1:443>
        ServerName foo
        DocumentRoot /var/www/foo
        CustomLog /var/log/httpd/foo.ssl_access_log combined
        ErrorLog /var/log/httpd/foo.ssl_error_log

        SSLEngine on
        SSLProtocol all -SSLv2
        SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW
        SSLCertificateFile /etc/pki/tls/certs/foo.crt
        SSLCertificateKeyFile /etc/pki/tls/private/foo.key
</VirtualHost>

<VirtualHost 2.2.2.2:443>
        ServerName bar
        DocumentRoot /var/www/bar
        CustomLog /var/log/httpd/bar.ssl_access_log combined
        ErrorLog /var/log/httpd/bar.ssl_error_log

        SSLEngine on
        SSLProtocol all -SSLv2
        SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW
        SSLCertificateFile /etc/pki/tls/certs/bar.crt
        SSLCertificateKeyFile /etc/pki/tls/private/bar.key
</VirtualHost>

In order to download the certificate, you need to use the client built into openssl like so:

echo -n | openssl s_client -connect $HOST:$PORTNUMBER -servername $SERVERNAME \
    | openssl x509 > /tmp/$SERVERNAME.cert

That will save the certificate to /tmp/$SERVERNAME.cert.

The -servername is used to select the correct certificate when multiple are presented, in the case of SNI.

You can use -showcerts if you want to download all the certificates in the chain. But if you just want to download the server certificate, there is no need to specify -showcerts. The x509 at the end will strip out the intermediate certs, you will need to use sed -n '/-----BEGIN/,/-----END/p' instead of the x509 at the end.

echo -n gives a response to the server, so that the connection is released

openssl x509 removes information about the certificate chain and connection details. This is the preferred format to import the certificate into other keystores.