Question

I have to implement a single signon kind of solution on my website. Let’s say my website is http://www.myweb.com and I want to allow the users to use this site who only come from a site http://www.sourceweb.com.

I thought URL Referrer would do but in IE may comes null.

See here

Please suggest me some alternate solution.

Thanks,

Gaurav

Answer 1

If you have access to http://www.sourceweb.com and can modify the source then a possible solution would be:

1. Create a webservice on http://www.myweb.com.
2. Create a link on http://www.sourceweb.com
3. When the link is clicked call the webservice to retrieve a unique id.
4. Redirect the user to http://www.myweb.com and provide the unique id in the querystring.
5. On http://www.myweb.com confirm that the unique id is valid and remove it/mark it as used.