SV-216356r970703: 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. | Solaris 11 SPARC STIG SCAP Benchmark

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Assessment Title

Rule Text

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

Discussion Text

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.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-001133V-48111SV-60983

References

DPMS Target Solaris 11 SPARC DISA DPMS Target Solaris 11 SPARC 4022

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

#!/bin/bash
# Reconstructed from oval:mil.disa.stig.solaris11:def:69
# 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.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# ClientAliveInterval is set to 600 in /etc/ssh/sshd_config.
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (sed -En 's/^\s*[Cc][Ll][Ii][Ee][Nn][Tt][Aa][Ll][Ii][Vv][Ee][Ii][Nn][Tt][Ee][Rr][Vv][Aa][Ll]\s+(\d+)/\1/p' '/etc/ssh/sshd_config') | grep -qxF '600'
}
# ClientAliveCountMax is set to 0 in /etc/ssh/sshd_config.
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  (sed -En 's/^\s*[Cc][Ll][Ii][Ee][Nn][Tt][Aa][Ll][Ii][Vv][Ee][Cc][Oo][Uu][Nn][Tt][Mm][Aa][Xx]\s+(\d+)/\1/p' '/etc/ssh/sshd_config') | grep -qxF '0'
}

if ! ( test_1 && test_2 ); then
  echo "PASS"
else
  echo "FAIL"
fi

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# DISA STIG / SCAP compliance check for rule oval:mil.disa.stig.solaris11:def:69

if [ ! -f "/etc/ssh/sshd_config" ]; then echo "PASS"; exit 0; fi

grep -q "^\\s*[Cc][Ll][Ii][Ee][Nn][Tt][Aa][Ll][Ii][Vv][Ee][Ii][Nn][Tt][Ee][Rr][Vv][Aa][Ll]\\s+600" /etc/ssh/sshd_config || { echo "FAIL"; exit 1; }

grep -q "^\\s*[Cc][Ll][Ii][Ee][Nn][Tt][Aa][Ll][Ii][Vv][Ee][Cc][Oo][Uu][Nn][Tt][Mm][Aa][Xx]\\s+0" /etc/ssh/sshd_config || { echo "FAIL"; exit 1; }

echo "PASS"; exit 0

Remediation

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