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Security in depth · Unit 26 · Lesson 3 of 4
Temporary access needs closure
Compare a support deadline with the actual closure of access and sessions.
Helpful before thisPivoting, proxies, and network boundaries
After this lesson you can
- Identify which control remains active after a temporary access window ends.
One idea. One situation. One reasoned decision.
How it works
An approved temporary connection should have an owner, purpose, endpoints, permitted traffic, and an end condition. Encryption protects transport under its protocol but does not make every destination appropriate. Record how the connection is monitored and how access is removed. Verify closure at the relevant control points instead of relying solely on the person’s statement that their task is finished.
A finished task can leave an active session
A fictional support connection is authorized only until 16:00 UTC. Its approved scope includes one service and one temporary identity. The review packet records:
| Record | Observed state |
|---|---|
| T1 | New gateway connections denied from 16:00 |
| T2 | Temporary identity disabled at 16:01 |
| T3 | Previously issued destination session accepted a request at 16:05 |
Worked decision: closure is incomplete. T1 establishes the new-connection boundary from the stated time. T2 records an identity change, but T3 shows that an existing destination session still provided access after the deadline. Do not infer that disabling an identity necessarily terminates every session it previously obtained.
Ask the destination owner to resolve the remaining session under the approved procedure and provide evidence of the resulting behavior. Keep the actual times: the late identity change and the accepted request should not be rewritten as closure at 16:00.
Future access plans should name the gateway, identity, and destination-session owners, plus the expected end condition at each layer. A final record should show both denied new access and appropriate handling of existing access. Transport encryption does not establish any of these lifecycle guarantees.
The key distinction: A business deadline and technical revocation are separate events.
Check yourself
No timer. No penalties. Read the explanation and try again whenever you like.
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What prevents the reviewer from confirming closure at 16:00?
Show the answer
Correct answer: T2 occurs after the deadline, and T3 shows continued destination access at 16:05. The records distinguish the planned deadline from actual control changes and observed session behavior. They do not support closure at 16:00.
Try it
- WriteWrite a closure note using T1-T3 that distinguishes the deadline from observed revocation. Specify which owner and acceptance evidence are still needed for the existing destination session.