The Juniper EX switch must be configured to produce audit records containing information to establish when (date and time) the events occurred.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-253890	JUEX-NM-000130	SV-253890r879564_rule		Medium

Description
It is essential for security personnel to know what is being done, what was attempted, where it was done, when it was done, and by whom it was done in order to compile an accurate risk assessment. Logging the date and time of each detected event provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured network device. In order to establish and correlate the series of events leading up to an outage or attack, it is imperative the date and time are recorded in all log records.

Description

It is essential for security personnel to know what is being done, what was attempted, where it was done, when it was done, and by whom it was done in order to compile an accurate risk assessment. Logging the date and time of each detected event provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured network device. In order to establish and correlate the series of events leading up to an outage or attack, it is imperative the date and time are recorded in all log records.

STIG	Date
Juniper EX Series Switches Network Device Management Security Technical Implementation Guide	2023-03-23

Details

Check Text ( C-57342r843701_chk )
Determine if the network device is configured to produce audit records containing information to establish when (date and time) the events occurred. Junos standard event log messages are configurable for time format, inclusion of logging facility and severity levels, and format. Setting "structured-data" automatically includes "explicit-priority" and "time-format year millisecond". Verify logging is enabled. [edit system] syslog { host { any info; structured-data; <<< Includes 'explicit-priority' and 'time-format' } host { any info; explicit-priority; <<< Includes logging facility and severity in standard format } file { any info; <<< Uses only standard format } time-format year; <<< Applied only to standard format } Note: In the example, events sent to the first external syslog server include the year and time is expressed in milliseconds. The second syslog server and the file both include the year, but time is expressed in seconds. If the network device does not produce audit records containing information to establish when the events occurred, this is a finding.

Check Text ( C-57342r843701_chk )

Determine if the network device is configured to produce audit records containing information to establish when (date and time) the events occurred.

Junos standard event log messages are configurable for time format, inclusion of logging facility and severity levels, and format. Setting "structured-data" automatically includes "explicit-priority" and "time-format year millisecond". Verify logging is enabled.

[edit system]
syslog {
host {
any info;
structured-data; <<< Includes 'explicit-priority' and 'time-format'
}
host {
any info;
explicit-priority; <<< Includes logging facility and severity in standard format
}
file {
any info; <<< Uses only standard format
}
time-format year; <<< Applied only to standard format
}
Note: In the example, events sent to the first external syslog server include the year and time is expressed in milliseconds. The second syslog server and the file both include the year, but time is expressed in seconds.

If the network device does not produce audit records containing information to establish when the events occurred, this is a finding.

Fix Text (F-57293r843702_fix)
Configure the network device to produce audit records containing information to establish when (date and time) the events occurred. set system syslog host any info set system syslog host structured-data <<< Includes the 'explicit-priority' and 'time-format year millisecond' directives set system syslog file any info set system syslog file structured-data <<< Includes the 'explicit-priority' and 'time-format year millisecond' directives -or- set system syslog host any info set system syslog host explicit-priority <<< Only if log level and severity are required set system syslog file any info set system syslog file explicit-priority <<< Only if log level and severity are required set system syslog time-format year

Fix Text (F-57293r843702_fix)

Configure the network device to produce audit records containing information to establish when (date and time) the events occurred.

set system syslog host any info
set system syslog host structured-data <<< Includes the 'explicit-priority' and 'time-format year millisecond' directives
set system syslog file any info
set system syslog file structured-data <<< Includes the 'explicit-priority' and 'time-format year millisecond' directives
-or-
set system syslog host any info
set system syslog host explicit-priority <<< Only if log level and severity are required
set system syslog file any info
set system syslog file explicit-priority <<< Only if log level and severity are required
set system syslog time-format year