If you want to do this locally then modifying the HOSTS file of the server hosting your site to point to the local machine's IP when visiting the abcd.com domain should do it.
Modifying your hosts file allows you to override the DNS for a domain,
on that particular machine. This is useful when you want to test your
site without the test link, prior to going live with SSL; verify that
an alias site works, prior to DNS changes; and for other DNS-related
reasons. Modifying your hosts file causes your local machine only to
look directly at the IP address specified.
- Press the Windows key.
- Type Notepad in the search field.
- In the search results, right-click Notepad and select Run as administrator.
- In Notepad, open the following file:
c:\Windows\System32\Drivers\etc\hosts
Add the following entry to the file:
Local IP Address www.abcd.com
Click File > Save to save your changes.
Source:
http://www.rackspace.com/knowledge_center/article/modify-your-hosts-file
NOTE: If you want to do this from another computer you have admin rights on then you use the same approach. If you want to do this from another computer you do not have admin rights on then you should go about getting a dedicated DNS entry set up for this site