How to make a website secured with https

Question

I have to build a small webapp for a company to maintain their business data... Only those within the company will be using it, but we are planning to host it in public dom

Answer 1

I think you are getting confused with your site Authentication and SSL.

If you need to get your site into SSL, then you would need to install a SSL certificate into your web server. You can buy a certificate for yourself from one of the places like Symantec etc. The certificate would contain your public/private key pair, along with other things.

You wont need to do anything in your source code, and you can still continue to use your Form Authntication (or any other) in your site. Its just that, any data communication that takes place between the web server and the client will encrypted and signed using your certificate. People would use secure-HTTP (https://) to access your site.

View this for more info --> http://en.wikipedia.org/wiki/Transport_Layer_Security

Answer 2

What should I do to prepare my website for https. (Do I need to alter the code / Config)

You should keep best practices for secure coding in mind (here is a good intro: http://www.owasp.org/index.php/Secure_Coding_Principles ), otherwise all you need is a correctly set up SSL certificate.

Is SSL and https one and the same..

Pretty much, yes.

Do I need to apply with someone to get some license or something.

You can buy an SSL certificate from a certificate authority or use a self-signed certificate. The ones you can purchase vary wildly in price - from $10 to hundreds of dollars a year. You would need one of those if you set up an online shop, for example. Self-signed certificates are a viable option for an internal application. You can also use one of those for development. Here's a good tutorial on how to set up a self-signed certificate for IIS: Enabling SSL on IIS 7.0 Using Self-Signed Certificates

Do I need to make all my pages secured or only the login page..

Use HTTPS for everything, not just the initial user login. It's not going to be too much of an overhead and it will mean the data that the users send/receive from your remotely hosted application cannot be read by outside parties if it is intercepted. Even Gmail now turns on HTTPS by default.

Answer 3

4.Do I need to make all my pages secured or only the login page...

Just keep the login page under https

this will ensure there is no overhead when browsing other pages. the condition is you need to provide correct authentication settings in the web config. This is to ensure users who are not logged in will not be able to browse pages that would need authentication.

Answer 4

What kind of business data? Trade secrets or just stuff that they don't want people to see but if it got out, it wouldn't be a big deal? If we are talking trade secrets, financial information, customer information and stuff that's generally confidential. Then don't even go down that route.

I'm wondering whether I need to use a secured connection (https) or just the forms authentication is enough.

Use a secure connection all the way.

Do I need to alter the code / Config

Yes. Well may be not. You may want to have an expert do this for you.

Is SSL and https one and the same...

Mostly yes. People usually refer to those things as the same thing.

Do I need to apply with someone to get some license or something.

You probably want to have your certificate signed by a certificate authority. It will cost you or your client a bit of money.

Do I need to make all my pages secured or only the login page...

Use https throughout. Performance is usually not an issue if the site is meant for internal users.

I was searching Internet for answer, but I was not able to get all these points... Any whitepaper or other references would also be helpful...

Start here for some pointers: http://www.owasp.org/index.php/Category:OWASP_Guide_Project

Note that SSL is a minuscule piece of making your web site secure once it is accessible from the internet. It does not prevent most sort of hacking.

Answer 5

Try making a boot directory in PHP, as in

<?PHP
$ip = $_SERVER['REMOTE_ADDR'];
$privacy = ['BOOTSTRAP_CONFIG'];
$shell   = ['BOOTSTRAP_OUTPUT'];
enter code here
if $ip == $privacy {
function $privacy int $ip = "https://";
} endif {
echo $shell
}
?>

Thats mainly it!

Answer 6

@balalakshmi mentioned about the correct authentication settings. Authentication is only half of the problem, the other half is authorization.

If you're using Forms Authentication and standard controls like <asp:Login> there are a couple of things you'll need to do to ensure that only your authenticated users can access secured pages.

In web.config, under the <system.web> section you'll need to disable anonymous access by default:

<authorization>
 <deny users="?" />
</authorization>

Any pages that will be accessed anonymously (such as the Login.aspx page itself) will need to have an override that re-allows anonymous access. This requires a <location> element and must be located at the <configuration> level (outside the <system.web> section), like this:

<!-- Anonymous files -->
<location path="Login.aspx">
 <system.web>
  <authorization>
   <allow users="*" />
  </authorization>
 </system.web>
</location>

Note that you'll also need to allow anonymous access to any style sheets or scripts that are used by the anonymous pages:

<!-- Anonymous folders -->
<location path="styles">
 <system.web>
  <authorization>
   <allow users="*" />
  </authorization>
 </system.web>
</location>

Be aware that the location's path attribute is relative to the web.config folder and cannot have a ~/ prefix, unlike most other path-type configuration attributes.