The structure of a log message

The following sections describe the structure of log messages.

Currently there are two standard syslog message formats:

• The old standard described in RFC-3164 (also called the BSD-syslog or the legacy-syslog protocol): see BSD-syslog or legacy-syslog messages.

• The new standard described in RFC-5424 (also called the IETF-syslog protocol): see IETF-syslog messages.

• The Enterprise-wide message model or EWMM allows you to deliver structured messages between syslog-ng OSE nodes: see Enterprise-wide message model (EWMM).

• How messages are represented in syslog-ng OSE: see Message representation in syslog-ng OSE.