The operating system must terminate the network connection associated with a communications session at the end of the session or after 10 minutes of inactivity.

An XCCDF Rule

Description

<VulnDiscussion>This requirement applies to both internal and external networks. Terminating network connections associated with communications sessions means de-allocating associated TCP/IP address/port pairs at the operating system level. The time period of inactivity may, as the organization deems necessary, be a set of time periods by type of network access or for specific accesses.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-216356r603267_rule
Severity: Low
References: CCI-001133
Updated: 9 months ago

The root role is required.

Configure the system to disconnect SSH sessions after 10 minutes of inactivity.

Modify the sshd_config file:
# pfedit /etc/ssh/sshd_config

Modify or add the lines containing:

ClientAliveInterval
ClientAliveCountMax 

Change them to:

ClientAliveInterval 600
ClientAliveCountMax 0

Restart the SSH service:

# svcadm restart svc:/network/ssh

The operating system must terminate the network connection associated with a communications session at the end of the session or after 10 minutes of inactivity.

Description

Remediation - Manual Procedure