Axsis Network
21/10/2016
The Network News Transfer Protocol (NNTP) is an application protocol used for transporting Usenet news articles (netnews) between news servers and for reading and posting articles by end user client applications. Brian Kantor of the University of California, San Diego and Phil Lapsley of the University of California, Berkeley authored RFC 977, the specification for the Network News Transfer Protocol, in March 1986. Other contributors included Stan O. Barber from the Baylor College of Medicine and Erik Fair of Apple Computer.
Usenet was originally designed based on the UUCP network, with most article transfers taking place over direct point-to-point telephone links between news servers, which were powerful time-sharing systems. Readers and posters logged into these computers reading the articles directly from the local disk.
As local area networks and Internet participation proliferated, it became desirable to allow newsreaders to be run on personal computers connected to local networks. The resulting protocol was NNTP, which resembled the Simple Mail Transfer Protocol (SMTP) but was tailored for exchanging newsgroup articles.
A newsreader, also known as a news client, is a software application that reads articles on Usenet, either directly from the news server's disks or via the NNTP.
The well-known TCP port 119 is reserved for NNTP. Well-known TCP port 433 (NNSP) may be used when doing a bulk transfer of articles from one server to another. When clients connect to a news server with Transport Layer Security (TLS), TCP port 563 is often used. This is sometimes referred to as NNTPS. Alternatively, a plain-text connection over port 119 may be changed to use TLS via the STARTTLS command.
In October 2006, the IETF released RFC 3977 which updates NNTP and codifies many of the additions made over the years since RFC 977. At the same time, the IETF also released RFC 4642 which specifies the use of Transport Layer Security (TLS) via NNTP over STARTTLS.
18/10/2016
Microwave links are widely used for connectivity in modern digital IP networks. With capacities up to 3Gbps and beyond, a modern Microwave Link network can deliver bandwidth in a reliable, cost-effective and flexible manner – without need for disruption and delay caused by digging up streets and avoiding costly leased-line or leased fibre optic alternatives.
18/10/2016
DEFINITION of 'ISP (Internet Service Provider)'
A company that provides consumers and businesses access to the Internet. Depending on the services offered by the Internet Service Provider, it could be considered an information service provider, storage service provider, Internet Network Service Provider (INSP), or a combination of the three.
18/10/2016
I've started using the World Wide Web of the Internet in Iraq in 2000, and there was a lot of users of the network because of the dictatorial regime restrictions to be used under Saddam Hussein's government, with limited use of the security services personnel, intelligence and some graduate students after obtaining regulatory approval, where statistics indicate in in 2000 the existence of 12,500 users and the evolution of this figure later, especially after the US invasion of Iraq in 2003, where Statistics show recent that the number of internet users in Iraq more than three million users in 2014, is a scale iq is the main scale of Iraq
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