How to determine if OpenSSL and mod_ssl are instal

Question

Does anyone know the command to determine if OpenSSL and mod_ssl are installed on Apache2?

Answer 1

If you have PHP installed on your server, you can create a php file, let's called it phpinfo.php and add this <?php echo phpinfo();?>, and open the file in your browser, this shows information about your system environment, to quickly find info about your Apache loaded modules, locate 'Loaded Modules' on the resulting page.

Answer 2

The default Apache install is configured to send this information on the Server header line. You can view this for any server using the curl command.

$ curl --head http://localhost/
HTTP/1.1 200 OK
Date: Fri, 04 Sep 2009 08:14:03 GMT
Server: Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.8a DAV/2 PHP/5.2.6 SVN/1.5.4 proxy_html/3.0.0

Answer 3

Use the following commands.

$ openssl version
OpenSSL 1.0.1e-fips 11 Feb 2013 (or similar output)

For RHEL/CentOS/Fedora:

$ httpd -t -D DUMP_MODULES | grep ssl
ssl_module (shared)

For Ubuntu/Debian

$ apache2 -t -D DUMP_MODULES | grep ssl
ssl_module (shared)

For SUSE

$ httpd2 -t -D DUMP_MODUELS | grep ssl
ssl_module (shared)

Answer 4

If you have PHP installed on your server, you can chek it in runtime using "extension_loaded" funciontion. Just like this:

<?php
if (!extension_loaded('openssl')) {
    // no openssl extension loaded.
}
?>

Answer 5

You should install this Apache mod, http://httpd.apache.org/docs/2.0/mod/mod_info.html, it basically gives you a run down of the mods you're using and the Apache settings. I have this enabled on my Apache and it gives me this info for my website,

Server Version: Apache/2.2.3 (Debian) mod_jk/1.2.18 PHP/5.2.0-8+etch13 mod_ssl/2.2.3 OpenSSL/0.9.8c mod_perl/2.0.2 Perl/v5.8.8

Answer 6

If you just run openssl in your terminal it should present the openSSL shell. My first clue to knowing that I didn't have mode_ssl was when I got the following error after adding SSLEngine on in my virtualhost file:

Invalid command 'SSLEngine', perhaps misspelled or defined by a module not included in the server configuration

In centos I just had to install it via yum install mod_ssl