tcp – POFTUT

Who Invented The Internet?

Who Invented The Internet?

The Internet is the most popular technology term known by billions of people around the world. What makes is the most popular is its usage, access range, abilities, and new opportunities. Internet the core of everyday life like a government, bank, etc. But who invented the internet? What Is Internet? Before answering our questions we … Read more

What Is OSI (Open Systems Interconnection) Model?

What Is OSI (Open Systems Interconnection) Model?

Open Systems Interconnection Model or OSI Model is an architecture to specify computer networks functions in a clear and compatible way. OSI provides interoperability of diverse communication systems with standard communication and transmission architecture, layers, and protocols. OSI History In the early- and mid- 1970s the computer networks largely owned and operated by the governments … Read more

How To “netsh winsock reset” To Fix Windows Network Problems?

How To "netsh winsock reset" To Fix Windows Network Problems?

Windows operating system uses Winsock technology in order to maintain network and internet communication and connection. During the usage of the Winsock especially in heavy usage, it may create network and internet connection problems because of the crash. In this tutorial, we will learn how to reset the network adaptor and TCP/IP network stack via … Read more

IPv4 vs IPv6 – What Are Similarities and Differences?

IPv4 vs IPv6 - What Are Similarities and Differences?

Internet Protocol or IP is designed to create a worldwide network to connect every computer to each other. OSI reference model creates a model where different protocols and networks can be defined and IP is used for the Network layer. There are two main versions of the IP protocol named IPv4 and IPv6. We will … Read more

What Is Packet Sniffing with List Of Packet Sniffers?

What Is Packet Sniffing with List Of Packet Sniffers?

Packet Sniffing is the process to capture packets. Generally, computer network packets are sniffed. Packet sniffing may seem very simple but in reality, it provides a lot of complexity related to the protocols, network mediums, etc. Packet Capture or Packet Sniffing Before starting to learn what is packet sniffing we have to learn the difference … Read more

What Is A Firewall and How Its Work?

Today Firewall is depicted as the main component of the security and networks. Firewalls provide a lot of different operations and features. In the old days, the firewall was simply used to block or allow some ports and management of the NAT. These days there are a lot of different threats where the firewall is … Read more

What Is NAT (Network Address Translation) and How It Works?

Network Address Translation a.k.a. NAT is a process or technique used to change IP address and TCP port numbers by an intermediate device like firewall, router, modem, etc. There are different use cases for NAT but the most popular one is to use a single WAN IP address for multiple servers and clients which is … Read more

What Is DNS Server Or Protocol Port Number?

Domain Name System aka DNS is used to match domain names to the IP addresses. DNS is provided over the intranet and internet servers with different port numbers.DNS can use both transmission protocols TCP and UDP. But general usage is over UDP protocol because of its simplicity and speed. TCP Port 53 One of the … Read more

How To Flush DNS and Reset TCP/IP with ipconfig /flushdns Command In Windows

DNS is used to translate between a human-readable name like and IP address like 45.79.1333.118. DNS can use both UDP and TCP protocols but generally, UDP protocol is preferred. In this tutorial, we will learn how to flush, clear the DNS cache with ipconfig /flushdns command. This tutorial can be applied to the All … Read more