public class RemoteSyslogAppender : UdpAppender

Public Class RemoteSyslogAppender
	Inherits UdpAppender

public ref class RemoteSyslogAppender : public UdpAppender

type RemoteSyslogAppender =  
    class
        inherit UdpAppender
    end

The RemoteSyslogAppender type exposes the following members.

	Name	Description
	RemoteSyslogAppender	Initializes a new instance of the RemoteSyslogAppender class.

	Name	Description
	Client	Gets or sets the underlying UdpClient. (Inherited from UdpAppender.)
	Encoding	Gets or sets Encoding used to write the packets. (Inherited from UdpAppender.)
	ErrorHandler	Gets or sets the IErrorHandler for this appender. (Inherited from AppenderSkeleton.)
	Facility	Syslog facility
	FilterHead	The filter chain. (Inherited from AppenderSkeleton.)
	Identity	Message identity
	Layout	Gets or sets the ILayout for this appender. (Inherited from AppenderSkeleton.)
	LocalPort	Gets or sets the TCP port number from which the underlying UdpClient will communicate. (Inherited from UdpAppender.)
	Name	Gets or sets the name of this appender. (Inherited from AppenderSkeleton.)
	RemoteAddress	Gets or sets the IP address of the remote host or multicast group to which the underlying UdpClient should sent the logging event. (Inherited from UdpAppender.)
	RemoteEndPoint	Gets or sets the cached remote endpoint to which the logging events should be sent. (Inherited from UdpAppender.)
	RemotePort	Gets or sets the TCP port number of the remote host or multicast group to which the underlying UdpClient should sent the logging event. (Inherited from UdpAppender.)
	RequiresLayout	This appender requires a log4net.Layout to be set. (Inherited from UdpAppender.)
	Threshold	Gets or sets the threshold Level of this appender. (Inherited from AppenderSkeleton.)

	Name	Description
	ActivateOptions	Initialize the options for this appender (Overrides UdpAppenderActivateOptions.)
	AddFilter	Adds a filter to the end of the filter chain. (Inherited from AppenderSkeleton.)
	AddMapping	Add a mapping of level to severity
	Append(LoggingEvent)	Append a bulk array of logging events. (Inherited from AppenderSkeleton.)
	Append(LoggingEvent)	This method is called by the DoAppend(LoggingEvent) method. (Overrides UdpAppenderAppend(LoggingEvent).)
	ClearFilters	Clears the filter list for this appender. (Inherited from AppenderSkeleton.)
	Close	Closes the appender and release resources. (Inherited from AppenderSkeleton.)
	DoAppend(LoggingEvent)	Performs threshold checks and invokes filters before delegating actual logging to the subclasses specific [M:Append(LoggingEvent)] method. (Inherited from AppenderSkeleton.)
	DoAppend(LoggingEvent)	Performs threshold checks and invokes filters before delegating actual logging to the subclasses specific [M:Append(LoggingEvent[])] method. (Inherited from AppenderSkeleton.)
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	FilterEvent	Test if the logging event should we output by this appender (Inherited from AppenderSkeleton.)
	Finalize	Finalizes this appender by calling the implementation's Close method. (Inherited from AppenderSkeleton.)
	Flush	Flushes any buffered log data. (Inherited from AppenderSkeleton.)
	GeneratePriority	Generate a syslog priority.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetSeverity	Translates a log4net level to a syslog severity.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	InitializeClientConnection	Initializes the underlying UdpClient connection. (Inherited from UdpAppender.)
	IsAsSevereAsThreshold	Checks if the message level is below this appender's threshold. (Inherited from AppenderSkeleton.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnClose	Closes the UDP connection and releases all resources associated with this UdpAppender instance. (Inherited from UdpAppender.)
	PreAppendCheck	Called before [M:Append(LoggingEvent)] as a precondition. (Inherited from AppenderSkeleton.)
	RenderLoggingEvent(LoggingEvent)	Renders the LoggingEvent to a string. (Inherited from AppenderSkeleton.)
	RenderLoggingEvent(TextWriter, LoggingEvent)	Renders the LoggingEvent to a string. (Inherited from AppenderSkeleton.)
	ToString	Returns a String that represents the current Object. (Inherited from Object.)

The BSD syslog protocol is used to remotely log to a syslog daemon. The syslogd listens for for messages on UDP port 514.

The syslog UDP protocol is not authenticated. Most syslog daemons do not accept remote log messages because of the security implications. You may be able to use the LocalSyslogAppender to talk to a local syslog service.

There is an RFC 3164 that claims to document the BSD Syslog Protocol. This RFC can be seen here: http://www.faqs.org/rfcs/rfc3164.html. This appender generates what the RFC calls an "Original Device Message", i.e. does not include the TIMESTAMP or HOSTNAME fields. By observation this format of message will be accepted by all current syslog daemon implementations. The daemon will attach the current time and the source hostname or IP address to any messages received.

Syslog messages must have a facility and and a severity. The severity is derived from the Level of the logging event. The facility must be chosen from the set of defined syslog RemoteSyslogAppenderSyslogFacility values. The facilities list is predefined and cannot be extended.

An identifier is specified with each log message. This can be specified by setting the Identity property. The identity (also know as the tag) must not contain white space. The default value for the identity is the application name (from Domain).

Reference