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Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data...

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How do I check my Internet connection speed?


How do I check my Internet connection speed?

Got a URL where I do not need to download anything?


Network Ports, what they are and they work.

Network ports are the threads that hold network communication together. They are an essential part of networking that can be easily ignore or misunderstood, my goals is to show those who don't have a strong network foundation how network ports operate.

Hi everybody i need write  modbus tcp/ip with vb all version…

Hi everybody i need write  modbus tcp/ip with vb all version

some people can help me? Thank You.…
Troubleshooting Solution

TCP socket


Hi, I am new to TCP socket. I have a question about socket. I need modify the TCP Client program

Troubleshooting Solution

Questions about canyouseeme.org


Two Questions:

1) Is canyouseeme.org checking for either UDP or TCP?

2) Do you have to have something

Troubleshooting Solution

Unable to access

I am able to ping the IP like

and few days ago I was able to access it fine using remote …
Troubleshooting Solution

Slow Network

This one has been a killer. About 3 weeks ago Comcast replaced their router which caused me to …

An Overview of DHCP

Configuring network clients can be a chore, especially if there are a large number of them or a lot of itinerant users. DHCP dynamically manages this process, much to the relief of users and administrators alike!
Troubleshooting Solution

How do I run anti malware software without going online

We have a computer that has been acting strange and we are concerned it has malware.  We don’t want …
Troubleshooting Solution
Troubleshooting Solution

Can't ping New Linux Servers



 I have set up two new Linux (CentOS 7) servers on the network. They received dynamic IP …
Troubleshooting Solution

How to send HEX commands in C/C++ over TCP/IP to control a relays board

I have an electronics board which has 16 relays and it works over TCP/IP.
The IP address of the …
Troubleshooting Solution

Getting "Ethernet" doesn't have a valid IP configuration on Windows 10

Hi Expert,

I have a laptop which i switched from LAN to wifi then back to LAN and I am getting …
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Powershell Script to pull the subnet mask and Gateway IP info on a list of Server IP's in a excel spreadsheet


Need a powershell script that will pull the subnet mask & Gateway IP info of the tcp/ip 4 NIC

Troubleshooting Solution

UnIdentified Network

We attempted to change our IP scheme, but now all we get is "Network Unidentified" and it states …
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Unable to Renew IP Address on Windows 10

Hi Expert,

I am unable to Renew IP Address on Windows 10, getting the following

No operation can be …
Troubleshooting Solution

Need help troubleshooting network problems (Windows, Exchange, Internet...)

I have a feeling I'm missing something simple and going to kick myself when someone posts the …
Troubleshooting Solution

Cisco RV 130 - No internet on wired connections, wireless clients ok

I am trying to setup a home office using Cisco networking gear.

I have setup my new rv130 VPN …
Troubleshooting Solution

TCP/IP 4 and 6, how to know my PC and internet already taking advantage on it ?


I have a concern on my home PC 's internet speed, and I known that TCP/IP 4 is for old world …
Troubleshooting Solution

BGP Flap and no issue with link - BGP hold time expire

Hi There

 Could someone advise me on what could be the issue here. I have check the provider link…

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