Nagios Core is the heart of the application that contains the core monitoring engine and a basic web UI. It provides features such as alerting, event handling, and reporting. Nagios is a powerful network monitoring tool that helps you to ensure that your critical systems, applications, and services are always up and running. When you launch Microsoft Message Analyzer, click ‘Start Local Trace’ to immediately start capturing traffic from the local machine, or ‘New Session’ to add a Data Source to capture. You can capture, view and analyze network protocol traffic side-by-side with other system or application events (e.g., Event Logs or SQL Tables), making it a valuable addition to your network toolkit. Microsoft Message Analyzer allows you to assess multiple log data sources from a single pane of glass. Some of its highlighted features include automated data capture (using PowerShell cmdlets to start or stop traces based on a particular trigger), TLS/SSL decryption support and customizable filter expressions. By adding ‘Color Rules’ to different protocol traffic, you can make scanning through areas of interest easier and faster. Microsoft Message Analyzer, the successor to Microsoft Network Monitor 3.4, has an intuitive and flexible UI with effective filtering options that allow you to break down and drill into captured packets (or ‘messages’ as they are called in Message Analyzer). But, don’t take our word for it, download the free 30-day trial and try it out. With centralized patch management and network auditing, GFI LanGuard prevents potential compliance issues, but if you’re a sysadmin the fact that all machines are patched and secured will surely seem like a more important advantage. Information coming from up to 60,000 devices, running on Windows, Mac OS or Linux, will be shown in a centralized web console, so you’ll be able to see the state of your whole network at any moment and from any location.
You can use it to scan both small and large networks, in search of software vulnerabilities and unpatched or unlicensed applications. People say it’s good to be modest and not to brag, but we’re so proud of our network management tool that we had to start the list with GFI LanGuard. GFI LanGuard (our award-winning paid solution) Even if you may have heard of some of these tools before, I’m confident that you’ll find a gem or two amongst this list. This list is intended to supplement 101 Free SysAdmin Tools. Here are 20 of the best free tools for monitoring devices, services, ports or protocols and analyzing traffic on your network.
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