File Service Protocol
In today's world, File Service Protocol is a topic that has gained relevance in different areas of society. For years, File Service Protocol has been the subject of debate and analysis due to its impact on people's daily lives. Whether in the scientific, social, political or cultural field, File Service Protocol has proven to be a constant point of interest for researchers, experts and the general public. In this article, we will explore how File Service Protocol has influenced various areas of society and what its implications are for the present and future. Through deep analysis, we seek to better understand the importance and scope of File Service Protocol today.
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File Service Protocol (FSP) is a UDP-based replacement for the File Transfer Protocol, designed for anonymous access with lower hardware and network requirements than FTP. In particular, because it uses UDP, it avoids the problems that many FTP servers have had with requiring a separate process for each client, [citation needed] and because it is built to use an unreliable protocol, it can more easily[citation needed] handle resuming a transfer after a network failure.
History
FSP never reached the popularity of FTP for legitimate use (although wuarchive and id Software provided FSP service in addition to FTP for some time), but became very popular in the early-to-mid-1990s for underground sites containing pornography and/or warez.[citation needed] Because an FSP server only requires one process (as opposed to one process per client for most FTP servers), it is much harder for a system administrator to notice it in a process list; also, since it uses UDP, it is less likely to be noticed by a network administrator.
Eventually, however, an increased use of firewalls, a decreasing usage of the shell accounts required to run a server or most of the clients, and a lack of FSP support in web browsers caused its use to taper off, and the warez scene moved to HTTP and FXP while pornography moved to publicly advertised web servers.[citation needed]
Port number
As the FSP protocol is not officially recognized by IANA, it has no official port number. However, as a UDP equivalent of FTP, official FSP servers frequently run on UDP port 21, which is the same as FTP's TCP port number. Because FSP uses UDP and FTP uses TCP they can both run at same time on the same port number without conflict. Unofficial servers may run on any port, although 2121 was a popular choice. (On most *nix systems, only the root user can start a process that listens on a port under 1024.)
Protocol name
The name FSP was originally created without a real expansion. In 1993, discussions were held about what to expand the acronym to; the ultimate result was File Service Protocol. Other suggestions included File Slurping Protocol, FTP's Sexier Partner, and Flaky Stream Protocol.[1] Due to its inherent low performance,[citation needed] FSP was sometimes colloquially said to stand for "Fucking Slow Protocol" .[citation needed]
References
- ^ "File Service Protocol (FSP) Frequently Asked Questions". Q.3.4. FAQS.ORG. Retrieved 13 January 2009.