Invalidating session on


30-Jul-2019 13:55

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A Session in HTTP is simply a bookmark that the server sends to the client so that on the next request the same application context will be used.Either side can discard this bookmark and the session is effectively ended, although in practice when a J(2)EE server invalidates a session, it also releases the session objects for potential garbage collection.Unique session identifiers or IDs are the opposite of sequentially generated session IDs which can be easily guessed by an attacker.Unique session IDs help to reduce predictability of said identifiers.Session IDs are tokens generated by web applications to uniquely identify an application user's session.Applications will make application decisions and execute business logic based on the session ID.This requirement may be verified by validated test results.If the network device does not invalidate session identifiers upon administrator logout or other session termination, this is a finding.

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This should be done by server-side check: On each (valid) request, store the request time in/for this session.If you can capture a closure event, then that's good. two minutes) and have some Javascript running in the background of the page to do some regular hidden "keep-alive" activity with the server (e.g.every 90 seconds) as long as the corresponding tab/window is open.HTTP isn't a protocol that relies on a continuous communication like client/server does.

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It's strictly request/response and effectively each request/response transaction stands by itself, which is why the "bookmark" concept was developed to maintain the illusion of a formal connect/converse/disconnect mode of operation.

Whenever a subsequent request is made, check the current time against the previous request time.