Title

The operating system must terminate all sessions and network connections when non-local maintenance is completed. (Cat II impact)

Discussion

Non-local maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the Internet) or an internal network. The operating system needs to ensure all sessions and network connections are terminated when non-local maintenance is completed.

Check Content

Determine if SSH is configured to disconnect sessions after 10 minutes of inactivity. # grep ClientAlive /etc/ssh/sshd_config If the output of this command is not: ClientAliveInterval 600 ClientAliveCountMax 0 this is a finding.

Fix Text

The root role is required. Configure the system to disconnect SSH sessions after 10 minutes of inactivity. # pfedit /etc/ssh/sshd_config Insert the two lines: ClientAliveInterval 600 ClientAliveCountMax 0 Restart the SSH service with the new configuration. # svcadm restart svc:/network/ssh

Additional Identifiers

Rule ID: SV-216399r603267_rule

Vulnerability ID: V-216399

Group Title: SRG-OS-000126

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.