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What is Cookie Munging?

Posted By :Virendra Dugar     Posted Date :November 17, 2009    Points :10   Category :ASP.Net 
By default, asp.net uses cookies to store session id for the logged in user. But there is an option in every browser to disable cookies. If cookies are disabled, then any website will not be able to create cookies on user's machine.

When cookies are disabled, then session Id is gets appended in the URL and passed to the server. Server decodes it and fulfill the requested page.

Cookie Munging is nothing but how ASP.NET manages session variables without cookies.

Virendra Dugar

You can also find related Interview Question to What is Cookie Munging?  below: 

Maximum Data that can be stored in a cookie?

Maximum 4 KB data can be store in a cookie. (More...)

What is persistent and non-persistent cookie?

Persistent Cookies : This can be said as permanent cookies, which gets stored on user's machine. For persistent cookie, one need to set the expiry date.

Non Persistent Cookies : This is Temporary Cookies which get's stored in browser's memory. (More...)

How do you create a permanent cookie?

By setting the time out as infinite (More...)

what is session ,cache, cookie, application memory timeout?


Session timeout: 20 min
Cache timeout: duration we have to specify.
Cookie: for in memory cookie till browser opened
For persistent cookie timeout is till expires property's time .
Application memory timeout: till appdomain exist (More...)

In ASP.NET how to destroy a cookie?

We cannot destroy a cookie on user's machine by Cookies.Remove method.

Instead we can set an already expired date for cookie expiration property.

if (this.Response.Cookies["MyCookie"] != null)
HttpCookie cookie = this.Response.Cookies["MyCookie"];
cookie.Expires = DateTime.Now.AddDays(-1);

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