The Juniper EX switch must be configured to generate audit records when successful/unsuccessful logon attempts occur.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-253933	SRG-APP-000503-NDM-000320	JUEX-NM-000560	SV-253933r961824_rule	2025-03-07	2

Description
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the network device (e.g., module or policy filter).

ℹ️ Check
Determine if the network device generates audit records when successful/unsuccessful logon attempts occur. Junos logs all logon attempts via the "authorization" syslog facility (or facility "any"). Verify logging level "any info" or "authorization info" is configured. [edit system syslog] file <file name> { authorization info; } host <external syslog address> { any info; } time-format year millisecond; Syslog outputs in standard format unless the "structured-data" directive is configured. Verify the "structured-data" command for all files and external syslog servers requiring that format. For example: [edit system syslog] host <syslog address> { authorization info; structured-data; } file <file name> { any info; structured-data; } If it does not generate audit records when successful/unsuccessful logon attempts occur, this is a finding.

ℹ️ Check

Determine if the network device generates audit records when successful/unsuccessful logon attempts occur. Junos logs all logon attempts via the "authorization" syslog facility (or facility "any"). Verify logging level "any info" or "authorization info" is configured. [edit system syslog] file <file name> { authorization info; } host <external syslog address> { any info; } time-format year millisecond; Syslog outputs in standard format unless the "structured-data" directive is configured. Verify the "structured-data" command for all files and external syslog servers requiring that format. For example: [edit system syslog] host <syslog address> { authorization info; structured-data; } file <file name> { any info; structured-data; } If it does not generate audit records when successful/unsuccessful logon attempts occur, this is a finding.

✔️ Fix
Configure the network device to generate audit records when successful/unsuccessful logon attempts occur. set system syslog file <file name> any info set system syslog file <file name> structured-data << (Optional) Only if structured data format is required set system syslog host <external syslog address> authorization info set system syslog host <external syslog address> structured-data << (Optional) Only if structured data format is required set system syslog time-format <(year\|millisecond)>

✔️ Fix

Configure the network device to generate audit records when successful/unsuccessful logon attempts occur. set system syslog file <file name> any info set system syslog file <file name> structured-data << (Optional) Only if structured data format is required set system syslog host <external syslog address> authorization info set system syslog host <external syslog address> structured-data << (Optional) Only if structured data format is required set system syslog time-format <(year|millisecond)>