The Online World resources handbook

Web/Internet tools and pointers http://home.eunet.no/~presno/bok/v6.html
NNTP server
Usenet netnews are being distributed globally through local servers, called NNTP
servers. You should use a local server. if available, for higher speed. Reading programs,
like WinVN and Netscape, require that you put the address of a NNTP server in the
configuration file. Netscape example:
NNTP_Server=nntp oslo.uninett.no
NNTP (Network News Transport Protocol) is an extension of the TCP/IP protocol that
describes how newsgroup messages are transported between compatible servers. Lists of
free NNTP servers: http://home.eunet.no/~kjetilm/news.htm and http://www.krusty.net
/usenet.shtml.
Ping (Packet Internet Groper)
A program to test a network connection on the Internet. Used to check if a connection to
another host is available, when your email seems not to reach a receiver.
Ping sends a message (an ICMP echo request packet) to a specified host, and waits
for a response. It reports success or failure and statistics about its operation. It gives you
the time taken for your packets to travel across the network too.
Postmaster
On the Internet, the person responsible for handling electronic mail problems, answering
queries about users, and other related work at a site.
POP3
Internet's Post Office Protocol version 3.0. An off line mail client (like Eudora or
Outlook Express) connects to a mail server, as requested by the user, and downloads all
the mailbox data to the client's computer. In the setup of your Internet mail client
application, the IP address of the POP3 server is pointing at the host receiving our email.
By default, once the download is successful, the client deletes the data from the
server, known as the maildrop.
You create folders in your email program in which you store individual messages,
you add signatures at the time of composing without the need to store a separate
signature file on your server, and you can compose and read your mail offline with a
familiar interface.
See: RFC 1225 IRU GHWDLOV 6HH IMAP for a popular alternative.
PPP
Point to Point Protocol. A serial communications protocol for connecting to the Internet
by direct or dial up lines. PPP systems can receive and transfer files without having to
use the intermediate host as a transfer and rest stop. It is generally considered to be
superior to SLIP, because it features error detection, data compression, and other
elements of communications protocols not included in SLIP.
A FAQ is posted to the comp.protocols.ppp, news.answers, and comp.answers on a
weekly basis. A must for those interested in connecting to Internet via serial lines.
Proxy servers
A proxy server is a machine which retrieves documents on command. The advantage
with a proxy server is that it normally caches documents, and makes it considerably
faster to retrieve documents from the proxy rather than directly from a machine eg.,
overseas.
Resource Description Framework (RDF)
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