# Cis AWS Euc 5.4

> Ensure session disconnect timeout is set to 5 minutes or less

- Skill: `cyberstrikeus/cis-aws-euc-5-4` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-aws-euc-5-4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-aws-euc-5-4/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-aws-euc-5-4

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# Ensure session disconnect timeout is set to 5 minutes or less (Automated)

## Profile Applicability

- Level 1

## Description

Disconnect timeout in minutes, is the amount of of time that a streaming session remains active after users disconnect.

## Rationale

If users try to reconnect to the streaming session after a disconnection or network interruption within the 5 minutes, they are connected to their previous session. Otherwise, they are connected to a new session with a new streaming instance and that instance isn't sitting out there not being used.

## Impact

None - this is a security best practice.

## Audit Procedure

Perform the following steps to view the Fleet settings in AppStream.

### Using AWS Console

1. Log in to the AppStream 2.0 console at `https://console.aws.amazon.com/appstream2`
2. In the left pane click on **Fleets**
3. Select the link for the fleet name you wish to view
4. On the **Fleet configuration** section confirm that Disconnect timeout is set to **5** minutes or less

If Disconnect timeout is set to anything greater than 5 minutes refer to the remediation below.

### Using AWS CLI

Not applicable - must be audited via Console.

## Expected Result

Disconnect timeout is set to 5 minutes or less.

## Remediation

### Using AWS Console

Perform the following steps to update the Fleet settings in AppStream:

1. Log in to the AppStream 2.0 console at `https://console.aws.amazon.com/appstream2`
2. In the left pane click on **Fleets**
3. Select the link for the fleet name you wish to edit
4. Scroll to the **Fleet configuration** section and click **Edit**
5. Change the Disconnect timeout to **5** minutes or less

### Using AWS CLI

Not applicable - must be configured via Console.

## Default Value

By default, AWS Appstream 2.0 session disconnect time is set to 15 minutes.

## References

1. https://docs.aws.amazon.com/appstream2/latest/developerguide/set-up-stacks-fleets.html
2. https://us-east-1.console.aws.amazon.com/appstream2/home?region=us-east-1#/create-fleet

## CIS Controls

**v8:**

- 0.0 Explicitly Not Mapped

**v7:**

- 0.0 Explicitly Not Mapped

## Profile

Level 1