Articles

MustNofee Link Checker

In this blog, MustNofee.com, there is now a new facility, which is MustNofee LinkChecker. What is MustNofee LinkChecker? MustNofee LinkChecker is one of the existing facilities in this virtual world, which provides the facility to check Pagerank, backlinks, and the popularity of a website.

Ylmf OS: Ubuntu "dressed" XP

A new breakthrough in the world of Linux. The developers of China has done many things on his ubuntu 9.10. They have done "face off" on the Ubuntu display changed to 9.10 which look similar to Windows XP. Starting from the log until the taskbar, at first glance there is no difference with Windows XP.

ADSL Connections Glance

Have we noticed about the condition of our internet connection? Especially when we use the services based ADSL connection. Perhaps we feel that our connection was slower than connections in other places that use the same service. Before discussing the conditions of our internet connection, it may be useful we need to know first, what is ADSL?

ADSL stands for Asymmetric Digital Subscriber Line which is one of the DSL technology. According to Wikipedia, features of ADSL is its asymmetric, namely that the data transferred in a different speed from one side to the other side.

ADSL is highly influenced by many factors, such as:

What is Dark Fiber

Dark fiber is a term used to describe fiber optic cable that is not being used at the time. The amount of dark fiber, particularly in the United States, is very high. Dark fiber is contrasted with active fiber optic cable, often referred to as lit cable.

In the past, dark fiber was virtually never sold. Telecommunications companies considered it their core asset, and selling it would be akin to selling off their business. Due to an incredible glut in the market, however, selling dark fiber has become extremely viable and is now a practice of many major telecommunications companies.

Testing Network Limit with Iperf

What Is Iperf?

Iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.

Features

TCP

Measure bandwidth
Report MSS/MTU size and observed read sizes.
Support for TCP window size via socket buffers.
Multi-threaded if pthreads or Win32 threads are available. Client and server can have multiple simultaneous connections.

User Datagram Protocol (UDP)

User Datagram Protocol (UDP) is one of the core protocols of the Internet protocol suite. Using UDP, programs on networked computers can send short messages sometimes known as datagrams (using Datagram Sockets) to one another. UDP is sometimes called the Universal Datagram Protocol. It was designed by David P. Reed in 1980.

Transmission Control Protocol (TCP)

The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite. TCP provides reliable, in-order delivery of a stream of bytes, making it suitable for applications like file transfer and e-mail. It is so important in the Internet protocol suite that sometimes the entire suite is referred to as "the TCP/IP protocol suite." TCP is the transport protocol that manages the individual conversations between web servers and web clients. TCP divides the HTTP messages into smaller pieces, called segments, to be sent to the destination client. It is also responsible for controlling the size and rate at which messages are exchanged between the server and the client.

IPv4 Subnetting Reference

Certain chunks of IPv4 address space are specially allocated by RFCs for special uses such as loopback (RFC 1643), Private networks (RFC 1918), and Zeroconf (RFC 3927) usage, and are not available for allocation by Regional Internet Registries (RIRs).