Invalidating a session using session id

Another advantage is , we need not to submit extra hidden parameter.As other approaches, this approach also has some disadvantages like we need to regenerate every url to append session identifier and this need to keep track of this identifier until the conversation completes.With this approach ,we have to have a logic to generate unique value and HTML does not allow us to pass a dynamic value which means we cannot use this approach for static pages.In short with this approach, HTML pages cannot participate in session tracking.j Session Id=XYZ where j Session Id=XYZ is the attached session identifier and value XYZ will be used by server to identify the user session.There are several advantages of URL rewriting over above discussed approaches like it is browser independent and even if user’s browser does not support cookie or in case user has disabled cookies, this approach will work.There are four techniques which can be used to identify a user session.a) Cookiesb) Hidden Fieldsc) URL Rewritingd) Session Object With Cookies , Hidden Fields and URL rewriting approaches, client always sends a unique identifier with each request and server determines the user session based on that unique identifier where as session tracking approach using Session Object uses the other three techniques internally.Cookie is a key value pair of information, sent by the server to the browser and then browser sends back this identifier to the server with every request there on.

invalidating a session using session id-57invalidating a session using session id-57invalidating a session using session id-6

If our application uses cookies for session management and our users disable the cookie , then we will be in a big trouble.As we know HTTP protocol is stateless which means client needs to open a separate connection every time it interacts with server and server treats each request as a new request.Now to identify the client ,server needs to maintain the state and to do so , there are several session tracking techniques.In addition, sending the old ID can be done as part of the testing to ensure that it is no longer recognised as an authorised session.In computer network security, session fixation attacks attempt to exploit the vulnerability of a system which allows one person to fixate (set) another person's session identifier (SID).

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