# Cis AWS Euc 5.4

> Cis AWS Euc 5.4 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Ensure session disconnect timeout is set to 5 minutes or less

- Skill name: `cis-aws-euc-5.4`
- Category: [DevOps & Security](https://www.openparable.com/skill/devops-security/1)
- Source: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Cloud_Providers/AWS/CIS_AWS_End_User_Compute_Services_Benchmark_v1.2.0/cis-aws-euc-5.4/SKILL.md
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# 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

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Source: https://www.openparable.com/skill/devops-security/cis-aws-euc-5-4 (OpenParable). Cite the canonical URL above.