You are here: Download > Top 100 of the month > Networking & Servers > Monitoring/Management > Diagnosis

Tests web servers and can detect around 2000 potentially dangerous CGI directories and scripts.

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Displays information about WLAN connections. Shows the SSID, signal quality, internal and external IP addresses, and upload and download speeds. Supports IP lookup with Google Maps and tells you whether the connection is secure.

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Vulnerability scanner which (similar to Nessus) is based on modular plug-ins for dedicated vulnerabilities. So far 340 plug-ins for various tests are available.

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Graphical front end for the tcpdump network package sniffer that’s integrated in Mac OS X. Enables you to display all the traffic on the network connections. Manufacturer’s web site currently not available

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Sends ARP requests in a network to a host (specified by a MAC address) and displays the replies. The Windows version requires WinPcap and can be accessed from the FTP directoryof the developer.

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Network monitor and log analyser. Records data traffic and displays it with log information. For more details go to Network Monitor in the Microsoft TechNet Blog.

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Tool for testing web and FTP servers as well as other web services, such as JDBC databases.

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This development of the discontinued Ethereal project logs and analyses data traffic on the network. Includes the required WinPCap. Portable version also available. Fast and secure download from The H

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Monitors bandwidth, availability and all inbound and outbound data packets in networks and analyses the data stream. Outputs comprehensive evaluations of the monitored data and warns the administrator by email, SMS, pager or other means when an error is detected. Also available, for a fee, as a version for monitoring more than ten sensors.

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Determines internet and network connection response times and data transfer rates. Download requires registration.

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Windows driver and packet capture library for logging network packets. Required by Wireshark and Nmap.

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Reads and analyses packages on encrypted WiFi networks and tries to crack the WEP key of packages with weak initialisation vectors. The program has had no development since 2004. Fast and secure download from The H

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Displays network switches and provides information about the port name, speed, status, port use and activities. Can help you to find and resolve LAN problems. Download requires registration.

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Security scanner suite for client and server. Find out more about version 4.2 at The H.

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The Ethereal network sniffer in its new Windows outfit. Download requires a valid email address.

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Tools for finding WLAN access points that respond to a Probe Request. Displays SSID, channel number and so on.

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Web-based tool for analysing bandwidth in real time. Helps identify network bottlenecks by evaluating network flow data and creating detailed reports about bandwidth load, IP traffic and the top talkers.

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Analyses, debugs, monitors and evaluates LAN and internet connections.

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Scans all devices connected to a network and generates an overview map from the information collected. Monitors devices and alerts you to any problems which arise. Also available as version 4.0 beta3.

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Tests the performance and availability of your network connection (intranet and internet) and diagnoses problems. Shows the cause (your computer, the provider or the internet) and provides extensive information about the connection, such as trace route, IP address locations or ping times.

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