![]() ![]() Although it has numerous features, you don’t have to be a full-blown network analyst to make use of this tool. JDSU Network Analyzer Fast Ethernet has a long name and is long in features. Angry IP offers the following features: Portable (zero installation on certain platforms) ping checks NetBIOS information resolves hostnames determines MAC address can determine currently logged-in user plug in system scan results can be saved as CSV, TXT, XML, or IP-Port list and fast, mutli-threaded scanning. Angry IP ScannerĪngry IP Scanner is another open source, cross platform scanner that is designed, from the ground up, to be incredibly fast and very simple to use. Features include: Host discovery port scanning version detection OS detection scriptable interface web scanning full IPv6 support Nping support fast scanning and much more. With Zenmap you can empower the features of Nmap to help you with: network inventory, managing service upgrade schedules, and monitoring host or service uptime. Zenmap can be used to read live captures or save captures for later viewing. Zenmap is available for Windows, Linux, Mac, and BSD. Zenmap is the official GUI for the Nmap Security Scanner. NAST features: Build LAN hosts list follow a TCP-DATA stream find LAN internet gateways discover promiscuous nodes reset an established connection perform a single half-open portscanner perform a multi half-open portscanner find link type (hub or switch) catch daemon banner of LAN nodes control arp answers to discover possible arp-spoofings byte counting with an optional filter and write reports logging. But even if you have a GUI, this tool is quite handy. I put this tool on the list because it’s invaluable if the only machine you have access to is a UNIX GUI-less server. Even so, the tool is quite useful and does a great job of capturing network traffic. NAST (Network Analyzer Sniffer Tool) is an ncurses-based tool that has, admittedly, not been under development for quite some time. Other features include: powerful display filters rich VoIP analysis read/write many different capture file formats capture files can be compressed with on the fly live data can be read from Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others decryption support coloring rules output can be exported to XML, PostScript, CSV, or plain text. This analyzer features: Live capture and offline analysis standard three-pane packet browser multi-platform (Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others) captured network data can be browsed via GUI, or via the TTY-mode TShark utility. In fact, Wireshark is often considered the de facto standard among the industry. Wireshark is one of the most powerful network protocol analyzers on the market (free or paid). This blog post is also available as a TechRepublic Photo Gallery. ![]() With that promise made, let’s dive in and see what’s what. From this list, you should be able to find the one tool that perfectly suits your needs. To help narrow the search for you, I’ve found five of the best network analyzers available. But for most network admins, the free tools do a solid-enough job to get you the information you need.īut which of these tools are the best? If you start looking, you’ll find plenty available. Once you start looking, you can find analyzers of every shape, size, and price. The tools I speak of are network analyzers. In order to gather that information, you need the right tools. Solid information leads to a strong and worry-free network (or at least as worry-free as you can manage). If you work on a network, you then know the value of information. Jack Wallen lists five tools that can get you that solid information for free. Solid information leads to a strong and worry-free network. ![]() Five free network analyzers worth any IT admin’s time
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