Re: [CentOS] Testing "dark" SSL sites

On Tue, Oct 21, 2014 at 02:57:42PM -0700, lists@benjamindsmith.com wrote:

So we have a set of unit tests written using PHPUnit, having trouble validating certificates. How do you test/validate an SSL cert for a prototype "foo.com" server if it's not actually active at the IP address that matches DNS for foo.com?

openssl s_client -connect ip.ad.dr.ess:443 then decode the cert

e.g. $ openssl s_client -connect 1.2.3.4:443 < /dev/null >| cert

Now you can use the "x509" to look at various things eg $ openssl x509 -in cert -subject -noout subject= /description=foobar/C=US/CN=ssl.example.com/emailAddress=foo@example.com

"man x509"