netal -/- Franz Krainer

product logoSL4NT 3.2

SL4NT is an application which implements a syslog daemon. The purpose of a syslog daemon is to listen for incoming syslog messages from syslog senders - like Unix hosts, routers, firewalls, etc. - and then decode and process the messages for logging and notification purposes.

End-of-Sale Notice (Effective Date: 2022-06-01)

Licenses for our trialware product SL4NT can no longer be purchased.

Licensed customers will continue to receive support for the product, under the condition that the product is used on a supported Windows platform: up to and including Windows Server 2012R2.

You may use SL4NT for free on an arbitrary Windows platform, by applying the following license data to an installation of SL4NT:

Licensee: “Post-EOS-User” (case-sensitive)

Please note that we will no longer provide support for SL4NT (with the exception of licensed customers mentioned above).


  • Implemented as a multithreaded service
  • Support for asynchronous message processing
  • Receiver engine supports listening on multiple UDP/TCP ports
  • Rule based message processing
  • Support for trigger threshold settings
  • Supported rule conditions:
    • Facility
    • Priority
    • Source IP-address
    • Destination IP-address/port
    • Receive time
    • Substring search in message text/Regular Expression matching
    • Custom evaluator object (implemented as an ActiveX object)
  • Supported rule actions:
    • Log message to Windows NT Event Log (Application, System)
    • Log message to log file
    • Run program
    • Send network alert (requires Windows NT/2000/XP/Server 2003)
    • Send email (SMTP) message (MIME 1.0 compliant)
    • Forward syslog message to another syslog daemon
    • Log message to an ODBC database
    • Forward message to viewer (any Telnet client)
    • Execute custom handler (implemented as an ActiveX object)
  • Completely customizable log format
  • Support for automatic log file purging based on file size
  • Support for automatic creation of new log files periodically (hourly, daily, weekly, monthly) or when a particular file size has been reached
  • Support for IP-address to hostname resolution with caching for resolved mappings
  • Performance Counter Extension
  • MMC Snap-In (SL4NT Manager) for local and remote administration
  • Support for generating syslog messages for testing or troubleshooting purposes
  • Support for saving/restoring service configurations to/from text files
  • Support for configuring the syslog service using configuration files
Supported OS: All Windows versions since Windows NT 4.0, up to and including Windows Server 2012R2.
SL4NT 3.2 Service Pack 1 must be applied if SL4NT 3.2 is used on Windows Vista/Server 2008 or later.
Software Type: Trialware (60 days)

SL4NT Manager

File Content
SL4NT32.ZIP (1.09 MB)
  • SL4NT 3.2
SL4NT.CHM (258 KB)
  • Documentation (HTML Help) only. This file is included in the product distribution file SL4NT32.ZIP. You will download this file in case that you want to take a look at the documentation before installing the product.
  • Note: If you download the documentation separately, you must unblock the file after downloading it.
SL4NT32SP1.ZIP (320 KB)
  • SL4NT 3.2 Service Pack 1. SL4NT 3.2 SP1 must be applied if SL4NT 3.2 is used on Windows Vista/Server 2008 or later.

DisclaimIt can be uninstalled by:

  • Open the MS Windows Control Panel
  • Select 'Uninstall a Program'
  • Find SL4NT in the list of programs and double click on it
  • Click the 'Uninstall' button in the SL4NT Uninstall window

Copyright © 1997-2024 Franz Krainer. All Rights Reserved. Last modified: 2024-02-03