STIGQter: STIG Summary: Juniper EX Series Switches Network Device Management Security Technical Implementation Guide Version: 2 Release: 5 Benchmark Date: 01 Jul 2026:

The Juniper EX switch must be configured to end all network connections associated with a device management session at the end of the session, or the session must be terminated after five minutes of inactivity except to fulfill mission requirements.

DISA Rule

SV-253913r1082962_rule

Vulnerability Number

V-253913

Group Title

SRG-APP-000190-NDM-000267

Rule Version

JUEX-NM-000360

Severity

CAT I

CCI(s)

• CCI-001133 - Terminate the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity.

Weight

10

Fix Recommendation

Configure the network device to terminate the connection associated with a device management session at the end of the session or after five minutes of inactivity.

There is no configuration required to support explicit logout ("quit" at the end of the session).
1. Enter configuration mode.
2. Configure inactivity timeout for root.
3. Configure inactivity timeout for all login classes.
4. Commit the configuration.

user@host> configure
user@host# set system login idle-timeout 5
user@host# set system login class <class name> idle-timeout 5
user@host# commit

Check Contents

Determine if the network device terminates the connection associated with a device management session at the end of the session or after five minutes of inactivity. This requirement may be verified by demonstration or configuration review.

Junos permits the administrator to log out at the end of the session, which terminates the session and the network connection. Junos forcibly terminates the session and network connection upon exceeding the inactivity timeout threshold. Inactivity timeouts are assigned to login classes and apply to every administrative access method; there is no provision to set inactivity timeout differently for local (console) and network (remote) device management sessions. Verify the idle-timeout for the root user, and each login class, has an appropriate idle-timeout value.

user@host> show configuration system login
...
idle-timeout 5;
class <name> {
idle-timeout 5;
...
}

Note: Inactivity timeout (idle-timeout) must be assigned to every login class.

If the network device does not terminate the connection associated with a device management session at the end of the session or after five minutes of inactivity, this is a finding.

Vulnerability Number

V-253913

Documentable

False

Rule Version

JUEX-NM-000360

Severity Override Guidance

Determine if the network device terminates the connection associated with a device management session at the end of the session or after five minutes of inactivity. This requirement may be verified by demonstration or configuration review.

Junos permits the administrator to log out at the end of the session, which terminates the session and the network connection. Junos forcibly terminates the session and network connection upon exceeding the inactivity timeout threshold. Inactivity timeouts are assigned to login classes and apply to every administrative access method; there is no provision to set inactivity timeout differently for local (console) and network (remote) device management sessions. Verify the idle-timeout for the root user, and each login class, has an appropriate idle-timeout value.

user@host> show configuration system login
...
idle-timeout 5;
class <name> {
idle-timeout 5;
...
}

Note: Inactivity timeout (idle-timeout) must be assigned to every login class.

If the network device does not terminate the connection associated with a device management session at the end of the session or after five minutes of inactivity, this is a finding.

Check Content Reference

M

Target Key

5477