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Enabling SSL on Apache on Windows

I spent a couple of hours the other night attempting to enable SSL on Apache on my local dev machine and figured I'd share what I did in an effort to help the next poor soul who needs to do this.

Of course the first step was to Google enabling ssl on apache on windows, which yielded a bounty of resources. The first link that I saw (and clicked) was to an article by Neil C. Obremski entitled Apache2 SSL on Windows, and it gave me almost all of the info I needed. One missing piece was that Neil's article is for Apache 2.0.x, but I'm running Apache 2.2.x. Luckily, he includes a link to a Word document written by Luke Holladay which includes instructions for Apache 2.2.x. To simplify things I've compiled the necessary steps from both of those articles, and included some stuff that I had to figure out on my own. My step-by-step instructions follow.

Step 1 - What You Need

  • A copy of Apache that includes SSL support.
  • A copy of OpenSSL.
  • An openssl.cnf file.

The copy of Apache that I had installed on my machine did not include SSL support, so I moseyed on down to the Apache download page. You'll notice on that page that there are files named something like apache_2.2.11-win32-x86-openssl-0.9.8i.msi, as well as files named something like apache_2.2.11-win32-x86-no_ssl.msi. You need to have the openssl version installed, not the no_ssl version (duh). I couldn't find any reliable info on manually adding SSL support to a no_ssl install, so I simply downloaded the most up-to-date version of the openssl installer and ran it. It successfully upgraded my version of Apache without overwriting any of my existing config files.

The nice thing about that installer is that it includes a copy of OpenSSL, so you don't need to download that separately.

Finally, you need an openssl.cnf file, which doesn't come with the package. I downloaded one that works from Neil's site. If that link is broken you can find a copy attached to this blog post. I have Apache installed in C:\Apache\, which means that I can find OpenSSL in C:\Apache\bin\, so I copied the openssl.cnf file into that directory.

Step 2 - Create a Self-Signed Certificate

This step will create a number of files related to your certificate. Each of those files has the same name, with a different extension. In the example commands below I've used the name bob. Feel free to replace that with anything you like.

Open a command prompt and switch to the directory that contains OpenSSL (C:\Apache\bin\, in my case). To create a new certificate request type the following:

openssl req -config openssl.cnf -new -out bob.csr -keyout bob.pem

You'll be prompted to answer a bunch of questions, the answers to which can all be left blank except for:

  • PEM pass phrase: This is the password associated with the private key (bob.pem) that you're generating. This will only be used in the next step, so make it anything you like, but don't forget it.
  • Common Name: This should be the fully-qualified domain name associated with this certificate. I was creating a certificate for a site on my local machine which I browsed to via http://savacms/, so I just entered savacms. If I was creating a cert for my blog I would have entered www.silverwareconsulting.com.

When the command completes you should have a two files called bob.csr and bob.pem in your folder.

Now we need to create a non-password protected key for Apache to use:

openssl rsa -in bob.pem -out bob.key

You'll be prompted for the password that you created above, after which a file called bob.key should appear in your folder.

Finally, we need to create an X.509 certificate, which Apache also requires:

openssl x509 -in bob.csr -out bob.cert -req -signkey bob.key -days 365

And that's it - you now have a self-signed certificate that Apache can use to enable SSL. I chose to move the required files from C:\Apache\bin\ to C:\Apache\conf\ssl\, but you can put them anywhere as you'll be pointing to them in your Apache config files.

Step 3 - Enable SSL on Apache

Open your httpd.conf file (which for me is in C:\Apache\conf\) and uncomment (remove the # sign) the following lines:

  • #LoadModule ssl_module modules/mod_ssl.so
  • #Include conf/extra/httpd-ssl.conf

Open your httpd-ssl.conf file (which for me is in C:\Apache\conf\extra\) and update the section entitled <VirtualHost _default_:443>. You'll need to update the values of ServerAdmin, DocumentRoot, ServerName, ErrorLog and CustomLog to match your environment. You'll also need to point SSLCertificateFile to your .cert file and SSLCertificateKeyFile to your .key file.

Restart Apache and browse to https://localhost/. You're now accessing your Apache server over SSL!

Step 4 - Create a VirtualHost Entry for Your Site

If you're like me, you're running Apache because you want to run multiple sites on your local machine. In that case you undoubtedly have multiple <VirtualHost> entries in your httpd-vhosts.conf file. In order to access a particular site via SSL, you need to add an additional <VirtualHost> entry for it. To illustrate I'll show you an existing <VirtualHost> entry that I have, and then the new <VirtualHost> that I created to allow me to access that site via SSL. Here's the original entry:


<VirtualHost *:80>
ServerAdmin bob.silverberg@gmail.com
DocumentRoot C:/wwwroot/savaCMS
ServerName savaCMS
DirectoryIndex index.html, index.cfm
ErrorLog logs/savaCMS-error_log
CustomLog logs/savaCMS-access_log common
<Directory C:/wwwroot/savaCMS>
Options All
AllowOverride All
</Directory>
</VirtualHost>

And here's the additional entry that I added:


<VirtualHost *:443>
SSLEngine on
SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL
SSLCertificateFile "C:/Apache/conf/ssl/savacms.cert"
SSLCertificateKeyFile "C:/Apache/conf/ssl/savacms.key"
ServerAdmin bob.silverberg@gmail.com
DocumentRoot C:/wwwroot/savaCMS
ServerName savaCMS
DirectoryIndex index.html, index.cfm
ErrorLog logs/savaCMS-error_log
CustomLog logs/savaCMS-access_log common
<Directory C:/wwwroot/savaCMS>
Options All
AllowOverride All
</Directory>
</VirtualHost>

I can now browse to http://savaCMS/ as well as https://savaCMS/! Hopefully these instructions will be found by the next person who chooses to attempt this.

Comments
Jason Dean's Gravatar Bob, Thank you for doing this. I followed your instructions and everything worked perfectly. Nice work.
# Posted By Jason Dean | 4/22/09 2:22 AM
Kalyan Chandra's Gravatar Ho Bob,

This is awesome, thank you very much..., It saved lot of time for me.
Steps were very simple and Easy.
# Posted By Kalyan Chandra | 5/11/09 3:58 AM
CG Monroe's Gravatar Great article.. I had found the Neilstuff article and docs and was wondering how to reconcile this info with the Apache OpenSSL version. This answered all those questions.

One minor note: There is an openssl.cnf file in the distro. It's installed in the conf directory. Maybe it doesn't get installed with an upgrade? You can use this by using openssl -config ../conf/openssl.conf ...
# Posted By CG Monroe | 6/11/09 2:41 PM
Greg Monroe's Gravatar In finishing up my install, I found that your SSL info implies something that doesn't work. You can't use Named virtual hosts and use *different* SSL certificates. You can use a single certificate in both VHs but all SSL connections will use the first certificate found. This means that users will get warnings about invalid certificate for all VHs except the one that matches the certificate. Not an issue if you're self certifying and don't care, but a problem if you're working with uninformed users.
# Posted By Greg Monroe | 6/12/09 12:29 PM
Bob Silverberg's Gravatar Greg,

I was just setting this up for my own local development, so that wasn't an issue for me. Thanks for the heads up though.
# Posted By Bob Silverberg | 6/12/09 12:36 PM
Deepak Kar's Gravatar Hey Bob, thanks a lot! I was following lots of tutorials based on older versions of Apache while using the latest one you wrote about. Hence no luck on enabling the SSL. Now it is all sorted out and working.
# Posted By Deepak Kar | 6/29/09 6:31 AM
Murray Eisenberg's Gravatar The two command-line openssl statements in Step 2 did not
work for me, even though I put openssl.cnf in my Apache 2.2
bin directory (where openssl.exe sits): I got error message:
"can't open config file: /usr/local/ssl/openssl.cnf"!

Note, too, that Windows XP gave some grief with the .cnf
extension, which on my system at least is interpreted as the
SpeedDial extension. I had to change the Windows .cnf file type
so it was no longer of type SpeedDial.
# Posted By Murray Eisenberg | 7/13/09 4:38 PM
Naveen's Gravatar when i renamed openssl.cnf its type changed to SpeedDial.
in Step6:2 when i run the command it was giving the error

"Error on line -1 of openssl :: system library:fopen:no such filr or directory: .\crypto\bio\bss_file.c:12"fopen<'openssl.cnf' ,''rb'>
# Posted By Naveen | 8/20/09 5:26 AM
Luca Zavarella's Gravatar In order to Generate a Certificate Signing Request (CSR) on your Apache web server on Windows Server you have go to the Apache bin folder:

- C:\Program Files\Apache Software Foundation\Apache2.2\bin

and than execute this:

- openssl req -config \conf\openssl.cnf -nodes -newkey rsa:2048 -keyout myserver.key -out server.csr
# Posted By Luca Zavarella | 9/3/09 4:21 PM
Naveen's Gravatar thanks luca ....
now i am able to setup https on my machine

thanks a lot
# Posted By Naveen | 9/4/09 12:33 AM
Randall Fox's Gravatar THANK YOU!!! I have an online store that I've been having a heck of a time with because I couldn't run it on my home machine for development. All the other articles discussing this were worthless. I spent hours trying to get it going. With your great article here, I had it up and running in about 15 minutes. Thanks again you are a lifesaver!
# Posted By Randall Fox | 9/5/09 10:02 AM
Jim Pickering's Gravatar Bob - thanks for this, I only had to do it twice and everything works!

One note in Step 2 where it says this:
openssl x509 -in bob.csr -out bob.cert -req -signkey bob.key -days 365

I had to use bob.crt (not bob.cert) - Apache recognized the .crt extension as a Security Certificate then.

Apache wouldn't start for me, with I used .cert.

Thanks Again!
# Posted By Jim Pickering | 10/24/09 12:36 PM
Aaron Nance's Gravatar Thanks Bob!

This was very helpful to me. I'm used to setting up SSL on Tomcat, but I've never had to do it in Apache. Your steps got me through it with very little difficulty. Now I can conquer my osCommerce integration problems!
# Posted By Aaron Nance | 11/20/09 1:32 PM
reya276's Gravatar I'm having an issue where I can't see any images or css styles which are to be generated by a PDF file. The PDF file code is 100% because the images and CSS shows once I disable the mod_ssl in apache2. Is there any way to have both SSL and image output.
# Posted By reya276 | 1/26/10 1:30 PM
Mick O'Connor's Gravatar Thanks Bob.
I was in a world of hurt before I found your article.

Following your steps made the whole thing easy.
# Posted By Mick O'Connor | 2/11/10 12:02 PM