Extra net is the part of the organization Intranet open for other organizations members. This is nothing but what we see in the Internet about any company. Suppose I type http://www.pww.philips.com
Then this portion of Philips Intranet is exposed to external members apart from Philips Employees, so this is extranet for Philips.
Then this portion of Philips Intranet is exposed to external members apart from Philips Employees, so this is extranet for Philips.
Sree