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V-216356

CAT III (Low)

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.

Rule ID

SV-216356r970703_rule

STIG

Solaris 11 SPARC Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-001133

Discussion

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.

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.

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