If you are a network engineer or a normal user, you may need to find, open or block a virtual port, such as a TCP or a UDP port for an application. Virtual ports help you manage your network hardware ...

I have this scenario where the MAC address table in my switch ages out MAC addresses of devices that it hasn't heard from after 5 minutes. I could extend this time, but the scenario also requires that ...

Packets can be sent from any endpoint to any other endpoint, where the endpoints are the nodes n0, n1, n4 and n5. The nodes n2 and n3 act as switches and do not have an IP address of their own. All ...

For background, I have a Toshiba Satellite and a desktop duron system both running win98. <BR><BR>Just installed the latest Kerio Personal Firewall on both. When I load up IE (version 5 on both ...

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues. The tool reports the port status of TCP and UDP ...

Only so much data can be passed through the network and to your computer's networking interfaces. This is limited by the amount of bandwidth you have. The more bandwidth you have, the faster your ...

Microsoft has quietly added a built-in network packet sniffer to the Windows 10 October 2018 Update, and it has gone unnoticed since its release. A packet sniffer, or network sniffer, is a program ...