Thema: Netzwerktools (WAN, LAN, WLan, Bluetooth ...)

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Free IP scanner is a very fast IP scanner and port scanner. It is intended for both system administrators and general users to monitor and manage their networks. Powered with multi-thread scan technology, this program can scan hundreds computers per second. It simply pings each IP address to check if it's alive, then optionally it is resolving its hostname, scans ports, etc.

Freeware

http://www.eusing.com/ipscan/free_ip_scanner.htm

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Hide Computer is the free command-line tool quickly Hide or unhide your computer on the Network. This tool will allow you to hide your system from Network Neighborhood and other browsing tools. However your friend who knows the shared file name, will be able to access it.

It automatically checks for the current Hidden status of your computer and accordingly hide or unhide it. Note that you will have to restart the system for changes to take effect. Also it may take an hour or two for it to be effective across the network. Being a command-line tool makes it easy to use on remote systems and also automate through scripts.

It works on both 32-bit & 64-bit platforms starting from Windows XP to Windows 8.

Freeware

http://securityxploded.com/hide-computer.php

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With Homedale you can monitor the signal strength of multiple WLAN Access Points. You can view a summary of all available access points with their signal strength, encryption [WEP/WPA/WPA2], speed, channel and other settings.

You can also see the signal strength of selected access points in a graph over the time. With a right mouse click, you can start logging and create a screenshot.

Freeware

New: Better AP authentication/encryption detection

http://thesz.diecru.eu/content/homedale.php

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Tool for monitoring network traffic (bandwidth) on selected interfaces.

Features: graph and numeric values in real-time, works with any network connection, taskbar icon showing activity, statistical module, computer work time, distance traveled by cursor (mouse), predictions based on collected data, review of archival data.

Freeware

http://venea.net/?action=article&article=nettraffic

[SiLæncer]

Scannt ein Netzwerk auf offene Ports und erstellt eine Trefferliste; exportiert gefundene Ports in die Formate TXT, CSV, XML und PDF.

kostenlos

http://www.lama-creation.de/tools/

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WifiInfoView scans the wireless networks in your area and displays extensive information about them, including: Network Name (SSID), MAC Address, PHY Type (802.11g or 802.11n), RSSI, Signal Quality, Frequency, Channel Number, Maximum Speed, Company Name, Router Model and Router Name (Only for routers that provides this information), and more...

When you select a wireless network in the upper pane of this tool, the lower pane displays the Wi-Fi information elements received from this device, in hexadecimal format.

WifiInfoView also has a summary mode, which displays a summary of all detected wireless networks, grouped by channel number, company that manufactured the router, PHY type, or the maximum speed.

License: Freeware

What's new: >>

Added 'BSS Type' column - Infrastructure or Ad-Hoc.
Fixed the flickering while scrolling the wireless networks list.

http://www.nirsoft.net/utils/wifi_information_view.html

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HTTPNetworkSniffer is a packet sniffer tool that captures all requests/responses sent between the Web browser and the Web server and displays them in a simple table. For every HTTP request, the following information is displayed: Host Name, HTTP method (GET, POST, HEAD), URL Path, User Agent, Response Code, Response String, Content Type, Referer, Content Encoding, Transfer Encoding, Server Name, Content Length, Cookie String, and more...

You can easily select one or more HTTP information lines, and then export them to text/html/xml/csv file or copy them to the clipboard and then paste them into Excel.

A 64-bit version is available.

License: Freeware

What's new: >>

Added 'Response Time' column, which calculates and displays the time (in milliseconds) passed between the moment that the client sent the HTTP request and the moment that the HTTP server response received by the client.
To get more accurate result on this column, it's recommended to use the WinPcap driver or the Microsoft Network Monitor driver (version 3.4 or later) to capture the packets.

http://www.nirsoft.net/utils/http_network_sniffer.html

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NetWorx is a simple and free, yet powerful tool that helps you objectively evaluate your bandwidth situation. You can use it to collect bandwidth usage data and measure the speed of your Internet or any other network connection. NetWorx can help you identify possible sources of network problems, ensure that you do not exceed the bandwidth limits specified by your ISP, or track down suspicious network activity characteristic of Trojan horses and hacker attacks.

Freeware

Whats new: >>

Fixed editing hidden boolean settings. Added a swap In/Out hidden parameter.
Fixed not resuming monitoring WinPCap traffic after adapter removal.
Added ignoring duplicates when importing IP address to local traffic filter.
Added recording traffic usage per application in the Ignore LAN traffic mode.
Added a Connection Monitor that records interruptions in your Internet connection service.
Moved ping, trace route and netstat under the Tools menu and updated some graphics.
Removed Windows 2000 support. Now Windows XP or higher is required.

http://www.softperfect.com/products/networx/

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WebCookiesSniffer captures all cookies sent to and from the Web server, displaying them in a simple table. The upper pane displays the cookie string and the Web site/host name that sent/received it. When selecting a cookie in the upper pane, the program parses the information in name-value format in the lower pane.

The program is browser-independent, using a packet sniffer to gather data.

A 64-bit version is available.

License: Freeware

What's new: >>

Added 'Copy Cookies String' option.

http://www.nirsoft.net/utils/web_cookies_sniffer.html

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WakeMeOnLan allows you to easily turn on one or more computers remotely by sending Wake-on-LAN (WOL) packet over the network. This will return machines from a standby or turned-off state, useful for administrators or to save electricity until resources are needed. WakeMeOnLan also allows you to scan your network and collect the MAC addresses of all online computers. This information can be exported to a file.

Additionally, an available command-line interface can turn on a computer using a computer name, IP address, or the MAC address of the remote network card.

License: Freeware

What's new: >>

When you choose to scan specific IP addresses range, WakeMeOnLan now automatically skips the broadcast addresses, according to the IP addresses/Subnet masks settings of every network adapter.
The default button of the delete question-box is 'No', in order to avoid from deleting by mistake.

http://www.nirsoft.net/utils/wake_on_lan.html

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Im Programm eToolz sind die wichtigsten Internet- und Netzwerkprogramme wie z.B. NS-Lookup, Ping, TraceRoute und Whois vereint.

E-Mail Adressen können beim betreffenden MX-Server auf ihre Gültigkeit überprüft werden. Zu Domains können die wichtigsten DNS-Einträge (A, PTR, NS, SOA) angezeigt werden. eToolz unterstützt auch internationalisierte Domainnamen (sog. "Umlautdomains")!

Das Programm eToolz muss nicht installiert werden. Da Programmdaten im Programmverzeichnis gespeichert werden, kann es auch problemlos auf einem USB-Stick verwendet werden.

Freeware

Whats new: >>

•    Bei den Host-Informationen werden jetzt bereits kodiert angegebene Umlautdomains auch dekodiert (mit Umlauten) anzeigen.
•    E-Mail Header Analyzer: EML-Dateien bzw. Textdateien mit einem Mail-Header können jetzt per Drag & Drop in das Textfeld gezogen werden.
•    Eine Sprachdatei für Französisch wurde hinzugefügt.
•    Eine Sprachdatei für Norwegisch wurde hinzugefügt.
•    Eine Sprachdatei für Schwedisch wurde hinzugefügt.
•    In mehrzeiligen Eingabefeldern (Header Analyzer, MultiPing und MultiRank) können Inhalte von Textdateien über das Kontextmenü eingefügt werden.
•    Professional: Die Listeneinträge von "MultiPing" und "MultiRank" können jetzt in verschiedenen Formaten kopiert werden. Als Trennzeichen werden Tabulator, Komma und Semikolon unterstützt.
•    Professional: MultiRank: Zu den URLs kann jetzt die IP-Adresse ermittelt werden. Im Kontextmenü kann diese auch an andere Tools übergeben werden.
•    Professional: Unter "MultiPing" und "MultiRank" können die Listen nach jeder Spalte aufsteigend oder absteigend sortiert werden.
•    Die Standardsprache wurde von Deutsch auf Englisch umgestellt. Dies gilt auch bei fehlenden Übersetzungen in anderen Sprachen.
•    Die Whois-Datenbank wurde aktualisiert.
•    Diverse kleinere Änderungen.

http://www.gaijin.at/dlet.php

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TMeter is a powerful traffic accounting and Internet sharing tool for Microsoft Windows. Using TMeter, you can make flexible and precision measurement of the traffic by any condition (for example, IP address of source/destination, protocol, port and etc) in real-time with immediately output of the collected statistic to graph or other reports.
 
TMeter has own built-in NAT (network address translation) engine which enables multiple hosts on a private network to access the Internet using a single public IP address. The firewall (also built-in TMeter) defends your host or your network against unwanted intrusions from the Internet. The Traffic Shaper allows restricting the speed of the Internet access (for example, 256 kbit/s) for specific users.

Freeware

whats new: >>

DHCP server settings dialog greatly improved
Fixed small bugs in DHCP server appeared in release 13.0

http://www.tmeter.ru/

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CurrPorts displays the list of all currently opened networking ports on your local computer. For each TCP/IP and UDP port in the list, information about the process that opened the port is displayed, including the process name, full path of the process, version information of the process (product name, file description, and so on), the time that the process was created, and the user that created it.

In addition, CurrPorts allows you to close unwanted TCP connections, kill the process that opened the ports, and save the TCP/UDP ports information to HTML file , XML file, or to tab-delimited text file. The program will automatically mark with pink suspicious ports owned by unidentified applications (applications without version information and icons).

A 64-bit version is available.

License: Freeware

What's new: >>

Added support for filtering by process ID (In Advanced Filters window), for example:
include:process:327

http://www.nirsoft.net/utils/cports.html

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WirelessKeyView recovers all wireless network keys (WEP/WPA) stored in your computer by the "Wireless Zero Configuration" service of Windows XP. It allows you to easily save all keys to text/HTML/XML file, or copy a single key to the clipboard.



License: Freeware

What's new: >>

Added 'Last Modified' column (Works only on Windows Vista/7/8)

http://www.nirsoft.net/utils/wireless_key.html

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Wireless Network Watcher is a small utility that scans your wireless network and displays the list of all computers and devices that are currently connected to your network. For every computer or device that is connected to your network, the following information is displayed: IP address, MAC address, the company that manufactured the network card, and optionally the computer name. You can also export the connected devices list into html/xml/csv/text file, or copy the list to the clipboard and then paste into Excel or other spreadsheet application.

Freeware

Whats new: >>

When you choose to scan specific IP addresses range, Wireless Network Watcher now automatically skips the broadcast addresses, according to the IP addresses/Subnet masks settings of every network adapter.
Fixed issue: On some network adapters, Wireless Network Watcher added items with empty MAC address - 00-00-00-00-00-00

http://www.nirsoft.net/utils/wireless_network_watcher.html