Syslog Receiver Records

The Syslog Receiver is based on RFC 3164 and listens for Syslog messages. By default, the Receiver listens for Syslog on UDP port 514 or TCP port 601.

By default, the Syslog Receiver defaults to collecting all syslog messages when there isn't an Include Filter assigned to it.

Before ELM receives any Syslog messages, the device sending Syslog has to be configured, and usually this is done in a syslog.conf file. A common format for this file designates facility, severity, and destination.

facility.severity[;facility.severity]	destination	Meaning
kern.*	@PDC1	Send all messages from the kernel facility to server PDC1.
*.err	@redmond	Send all messages with a severity of error to server REDMOND
cron.warning;ntp.alert	@corp3	Send messages from the cron facility with a severity of warning and from the ntp facility with a severity of alert to the server CORP3.

These are generic examples, please consult the documentation for your specific device for details about its Syslog functionality.

When ELM receives Syslog messages, the Syslog record format is converted to a Windows event log record style format.

Syslog messages have the following fields which ELM maps to the corresponding event record fields listed:

Syslog messages have 24 Facilities. These are converted to event categories by ELM according to the following mapping:

Number	Syslog Facility	Event Category
0	Kernel	kern
1	User	user
2	Mail	mail
3	Daemon	daemon
4	Auth	auth
5	Syslog	syslog
6	Lpr	lpr
7	News	news
8	UUCP	uucp
9	Cron	cron
10	Security	authpriv
11	FTP Daemon	ftp
12	NTP	ntp
13	Log Audit	audit
14	Log Alert	alert
15	Clock Daemon	clock
16	Local0	local0
17	Local1	local1
18	Local2	local2
19	Local3	local3
20	Local4	local4
21	Local5	local5
22	Local6	local6
23	Local7	local7

Syslog messages have 8 Severities or Levels. These are converted to event types by ELM according to the following mapping:

Number	Syslog Severity	Event Type
0	Emergency	Error
1	Alert	Error
2	Critical	Error
3	Error	Error
4	Warning	Warning
5	Notice	Warning
6	Info	Informational
7	Debug	Informational

Syslog messages have 192 Priorities. The lower the number, the higher the priority. These are calculated from the Facility and Level according to the following formula, and are used by ELM for the Event ID:

Facility	*	Multiplier	+	Severity	=	Priority (Event ID)
Mail (2)	*	8	+	Error (3)	=	19
Clock Daemon (15)	*	8	+	Warning (4)	=	124
Kernel (0)	*	8	+	Emergency (0)	=	0