Microsoft-Windows-L2NACP

5 events across 3 channels

Event	Title	Channel
13003	The pre-logon connection attempt is complete.	Operational
13004	The pre-logon connection attempt is complete.	Operational
13023	The pre-logon connection attempt is complete.	Operational
13024	The pre-logon connection attempt is complete.	Operational
14000	Plap Enabled = Enabled.	Diagnostic

Event ID 13003: The pre-logon connection attempt is complete.

Provider: Microsoft-Windows-L2NACP
Channel: Operational

Description

The pre-logon connection attempt is complete.

Message #

The pre-logon connection attempt is complete.

Network connection attempt result: %1
Reason: %2
Interface GUID: %3
Profile Name: %4

Fields #

Name	Description
`Result` UInt32
`Reason` UInt32
`InterfaceGuid` GUID
`ProfileName` UnicodeString

Event ID 13004: The pre-logon connection attempt is complete.

Provider: Microsoft-Windows-L2NACP
Channel: Operational

Description

The pre-logon connection attempt is complete.

Message #

The pre-logon connection attempt is complete.

Windows authentication result: %1
Interface GUID: %2
Profile Name: %3

Fields #

Name	Description
`Result` UInt32
`InterfaceGuid` GUID
`ProfileName` UnicodeString

Event ID 13023: The pre-logon connection attempt is complete.

Provider: Microsoft-Windows-L2NACP
Channel: Operational

Description

The pre-logon connection attempt is complete.

Message #

The pre-logon connection attempt is complete.

Network connection attempt result: %1
Reason: %2
Interface GUID: %3

Fields #

Name	Description
`Result` UInt32
`Reason` UInt32
`InterfaceGuid` GUID

Event ID 13024: The pre-logon connection attempt is complete.

Provider: Microsoft-Windows-L2NACP
Channel: Operational

Description

The pre-logon connection attempt is complete.

Message #

The pre-logon connection attempt is complete.

Windows authentication result: %1
Interface GUID: %2

Fields #

Name	Description
`Result` UInt32
`InterfaceGuid` GUID

Event ID 14000: Plap Enabled = Enabled.

Provider: Microsoft-Windows-L2NACP
Channel: Diagnostic

Description

Plap Enabled = Enabled.

Message #

Plap Enabled = %1

Fields #

Name	Description
`Enabled` Boolean
`Remote` Boolean
`Dot3Allowed` Boolean
`WlanAllowed` Boolean
`CredentialsFound` Boolean

Provenance

Where this provider's schema came from, and which Windows build it was observed on. Windows can change a provider's event schema between builds, so use this to judge whether it matches the build you collect from.

ETW provider GUID 85fe7609-ff4a-48e9-9d50-12918e43e1da

Defined in l2nacp.dll, which carries the event manifest.

Observed on:

WS2022-20348.4893 · schema read from the registered manifest · binary version 10.0.20348.1 · captured 2026-06-02
Win11-26200.6584 · schema read from the registered manifest · binary version 10.0.26100.1 · captured 2026-06-02

Downloads

Microsoft-Windows-L2NACP registered manifest XML (WS2022-20348.4893) manifest-xml
Microsoft-Windows-L2NACP registered manifest XML (Win11-26200.6584) manifest-xml

Credits

Microsoft - authored the ETW manifests and PDBs the schema comes from
jdu2600 - the event-schema TSV format this catalog adopted
nasbench - the tool that dumps registered providers and manifests

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)

Microsoft-Windows-L2NACP

Event ID 13003: The pre-logon connection attempt is complete.

Description

Message #

Fields #

Event ID 13004: The pre-logon connection attempt is complete.

Description

Message #

Fields #

Event ID 13023: The pre-logon connection attempt is complete.

Description

Message #

Fields #

Event ID 13024: The pre-logon connection attempt is complete.

Description

Message #

Fields #

Event ID 14000: Plap Enabled = Enabled.

Description

Message #

Fields #

Provenance

Downloads

Credits

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