Download PRTG Network Monitor 12.3.3.2854/2855


The PRTG Network Monitor 12 (Version 12.3.3.2854/2855) is now available for download. This release is a new minor version of PRTG Network Monitor 12. PRTG Network Monitor 12 was introduce a lot of new features that will bring network monitoring to a new level. Many of the new features are a response to requests from user community, and there are some more cool features which you will love.

PRTG Network Monitor is an advanced, easy-to-use monitoring solution for your entire network. The software’s features include: up/downtime monitoring, traffic and usage monitoring, packet sniffing, in-depth analysis and concise reporting. A user-friendly web-based interface allows users to quickly auto-discover and configure the network devices and sensors they wish to monitor. All common methods for acquiring network usage data are supported: SNMP and WMI, Packet Sniffing and NetFlow. It also offers SMTP/IMAP Roundtrip-Email Monitoring and VMware Monitoring, Toplists for Packet Sniffing and Netflow Sensors, as well as sensor aggregation using its built-in Sensor Factory.

PRTG Network Monitor includes more than 115 sensor types for all common network services (e.g. PING, HTTP, SMTP, POP3, FTP, etc.), allowing users to monitor networks for availability, speed and failures. As soon as an outage occurs, alerts are sent via email, SMS, pager messages and other means. Request times and downtimes are recorded in an internal database, making it easy to compile performance, downtime and SLA reports. Monitoring, reporting and notifications can be automatically scheduled at specific times. Network maps can be created which provide users with a unique visual network management tool. PRTG Network Monitor’s Freeware Edition is completely free for personal and commercial use. The Commercial Editions are required if you want to monitor more than ten sensors.

Key features:

Here are some of the key features of PRTG Network Monitor:

  • More than 115 sensor types covering all aspects of network monitoring.
  • Uptime/Downtime Monitoring.
  • Bandwidth Monitoring using SNMP, WMI, NetFlow, sFlow, jFlow, Packet Sniffing.
  • Application Monitoring.
  • Virtual Server Monitoring.
  • SLA monitoring.
  • QoS Monitoring. (e.g. when using VoIP)
  • Environmental Monitoring.
  • LAN, WAN, VPN, and Multiple Site Monitoring.
  • Extensive event logging.
  • IPv6 support.
  • Agent-less monitoring. (optional agents (remote probes) allow monitoring for even deeper metrics)

Download PRTG Network Monitor 12.3.3.2854/2855
PRTG Network Monitor Freeware Edition is available for download at following website:

License Freeware

Note: The PRTG Network Monitor Freeware edition is free for personal and commercial use but is limited to monitoring up to 10 sensors. If you want to monitor more sensors you must purchase one of PRTG Network Monitor commercial editions

What’s new in PRTG Network Monitor 12.3.3.2854/2855
PRTG Network Monitor 12.3.3.2854/2855 contains following updates and fixes:

  • New [Cluster]: Users can now select which cluster nodes are used to monitor a specific group/device (e.g. when not all cluster nodes can connect to a subnet or VPN).
  • New [Sensors]: MS Exchange Transport Queue Sensor.
  • New [Sensors]: Added a third option to the HTTP Full Page sensors. With this new third option you can enable screenshotting of each sensor run. You can either save only the latest screenshot, or each screenshot of this sensor. The image files will be stored on the probe system (user can set the number of days until the files are purged, creates a lot of data on the disk). This option needs plenty of CPU cycles and should not be used too heavily..
  • New [WebGUI]: Added an experimental feature that allows a user inside the WebGUI to install a remote probe on a Windows device in the sensor tree (Context menu of devices, device tools, install remote probe). The remote probe is automatically installed and configured. Afterwards it will show up at the bottom of the sensor tree and the user must approve the probe. Then sensors can be set up as usual. This is a great way to circumvent WMI or other connectivity problems by running sensors directly on the device.
  • Improved [Core]: When Active Directory integration is used all requests to the AD servers are now cached for one hour. Before this caching was implemented large and/or slow AD environments could potentially slow down PRTG’s user interfaces. If a password is changed in the AD you must either wait for 1h or clear the cache manually (on the status page).
  • Improved [Graphs]: Graphs now display the applied averaging interval at the bottom right.
  • Improved [Sensors]: Added timestamp into emails of email round trip sensors.
  • Improved [Sensors]: SNMP Custom String now supports RegExp.
  • Improved [Sensors]: When devices need extensive time to answer WMI requests the sensor will be labeled “sluggish” because these sensors can actually affect the performance of the complete WMI system for all devices. We recommend to either install a probe directly on these devices or at least move these sensors to a dedicated probe.
  • Changed [Sensors]: The Windows Scheduled Task sensor now supports tasks in sub folders. Note: When monitoring target systems which run Windows 2003 or Windows XP, the sensor might stop working under certain conditions.
  • Improved [Remote Probes]: More stability for Remote Probe connections.
  • Bugfix [Sensors]: Windows Print Queue Sensor now accepts ‘Min. Print Job Age’ setting.
  • Bugfix [Sensors]: HTTP sensors could show a false “302 moved temporarily” for some websites.
  • Bugfix [Core]: For connections to the Enterprise Console via Active Directory logins a session timeout could occur.
  • Bugfixes: Various bugfixes for the EC, core, sensors and probe.

More details available in PRTG Network Monitor Version History/Release Notes

System Requirements

In order to install and work with PRTG Network Monitor you need:

  • A PC, server or virtual machine with roughly the performance of an average PC built in the year 2007 or better and minimum 1024 MB RAM memory
  • Windows XP, Windows Vista (32 or 64 bit), Windows 7 (32 or 64 bit), Windows 2003 (32 or 64 bit), Windows Server 2008 (32 or 64 bit) and Windows Server 2008 R2
  • Web browser Google Chrome 10 or higher (recommended), Firefox 4 or higher, or Internet Explorer 9 or higher to access the web interface
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