Networking

Net Monitors
Comm View – Shareware
If you are new to networking, you’ll find CommView extremely useful for understanding how the Internet and your LAN work. Being a network analyzer (also commonly referred to as a packet analyzer, network monitor, or packet sniffer), it captures and decodes network traffic and makes sense of it, allowing you to see what, where, and how information leaves and enters your computer — which is critically important for a secure Internet experience.

Connectify – Freeware
Connect and share anywhere! With Connectify you can wirelessly share that single Internet connection with your phone, tablet, gaming system, and other equally important study tools.
Works on Vista and XP.

DNS Benchmark utility
GRC’s DNS Benchmark performs a detailed analysis and comparison of the operational performance and reliability of any set of up to 200 DNS nameservers (sometimes also called resolvers) at once. When the Benchmark is started in its default configuration, it identifies all DNS nameservers the user’s system is currently configured to use and adds them to its built-in list of publicly available “alternative” nameservers.

inSSIDer – Freeware
Get the best open-source Wi-Fi scanning software – for Free! inSSIDer scans networks within reach of your computer’s Wi-Fi antenna, tracks signal strength over time, and determines their security settings (including whether or not they’re password-protected).

NetStumbler has long been a favorite for this sort of functionality, but it doesn’t work well with Windows 7, Vista or 64-bit XP. inSSIDer, on the other hand, works like a charm on Windows 7, Vista and XP, and it’s open-source to boot.

IP Seizer – Freeware
IP Seizer is a free portable network utility to give you a list of all IP addresses currently in use on your network and what machines and devices are using them. The program gives the hostname, MAC address and workgroup or domain name.

IP Seizer can be run in two different modes, quick and thorough. The quick mode is the normal mode but may miss a few devices. The thorough mode will take longer to complete but will ping all the addresses to see what can be found. This mode should be used when looking for devices such as wireless bridges, switches, network cameras, printers etc.

Once the scan has been completed you can save or print the list by clicking the appropriate buttons on the tool bar.

netsh winsock reset – Resetting Winsock Catalog and Solving Network Problems
netsh winsock reset is a useful command that you can use in Microsoft Windows to reset winsock catalog back to default setting or clean state. You can try this if you are having following Internet access or networking problems but still failing to resolve the problem after trying all other suggestions.

  • Internet or network problem after removing the adware, spyware, virus, worm, trojan horse, etc
  • Loss network connection after installing/uninstalling adware, spyware, antispam, vpn, firewall or other networking programs
  • Unable to access any webpage or can only access some webpages
  • Pop-up error window with network related problem description
  • No network connectivity due to registry errors
  • DNS lookup problem
  • Fail to renew the network adapter’s IP address or other DHCP errors
  • Network connectivity issue with limited or no connections message
  • Other networking problems

If you are using Windows XP, here is the way you can launch command prompt after logging in as administrator.

  1. Go to Start and click Run…
  2. Type cmd.exe and click OK.
  3. Type “netsh winsock reset” in command prompt and hit ENTER button.

If you are using Windows Vista, here is the way you can launch command prompt.

  1. Go to Start -> All Programs -> Accessories
  2. Right-click on Command Prompt and click Run as administrator.
  3. Type “netsh winsock reset” in command prompt and hit ENTER button.

Restart the computer in order to complete the reset, after that test to access your network or Internet again.

NetStumbler – Freeware
For a Swiss Army knife of wireless network diagnostics, “NetStumbler” is saddled with a somewhat unfortunate name. Although it implies a sort of blind luck, NetStumbler is actually most useful for pinpointing details of a wireless network, helping you configure, secure, optimize and discover.

Network Scanner – freeware
Network Scanner is a free multi-threaded IP, NetBIOS and SNMP scanner with a modern interface and several advanced features. It is intended for both system administrators and general users who are interested in computer security. The program pings computers, scans for listening TCP ports and displays which types of resources are shared on the network (including system and hidden).

TCP View – Freeware
TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on your system, including the local and remote addresses and state of TCP connections. On Windows Server 2008, Vista, and XP, TCPView also reports the name of the process that owns the endpoint.

Virtual Router – Freeware
Virtual Router is a free, open source software based router for PCs running Windows 7 or Windows Server 2008 R2. Using Virtual Router, users can wirelessly share any internet connection (Wifi, LAN, Cable Modem, Dial-up, Cellular, etc.) with any Wifi device (Laptop, Smart Phone, iPod Touch, iPhone, Android Phone, Zune, Netbook, wireless printer, etc.) These devices connect to Virtual Router just like any other access point, and the connection is completely secured using WPA2 (the most secure wireless encryption.)

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