The SysLog notification will notify any SysLog listener. SysLog is an industry standard protocol used for capturing log information for devices on a network, usually via UDP Port 514.
SysLog support is included in UNIX and Linux based systems, but not included in Windows and MacOs. However, there are third-party applications available to add this capability to your system. Some routers support detailed logging via SysLog.
One free SysLog server is Kiwi SysLog Daemon. You can read more about it here.
Host
The location of the server, DNS or IP address.
Facility
This is defined by the SysLog protocol. It is meant to provide a rough estimation from what part of a system the message originated from. Traditionally, under UNIX, there are facilities like KERN (the OS kernel itself), LPD (the line printer daemon) and so on. There are also the LOCAL_0 to LOCAL_7 facilities, which traditionally were reserved for administrator and application use.
Level
SysLog levels are a method of describing to SysLog (8) the importance of a message.
Message/Body tab
This is the message to send to the SysLog server. It can contain text and variables.