Internet Protocol

Did you know that a standard IP address with four sets of numbers (each representing one byte of the 4 byte IP address) can be converted into one huge number that will work just as well for a url in some browsers? 3436327664 is 204.240.50.240. A*256*256*256 + B*256*256 + C*256 + D

Most often carried over CAT5 cables with RJ-45 connectors via Ethernet signals. Other options, such as Pigeons, are available.

View TCP/IP settings and current IP address in

Windows 95/98/ME/NT by clicking Start / Run then enter "winipcfg" and press Ok.
Windows NT / Vista / 7 and up Start / Control Panel / Network And [Internet or Sharing]
Linux with "ifconfig" (old) or "ip" (new)

Troubleshooting, Methods@, Applications@ Ideas@ Servers@ Services@ ISPs@ embedded@ spam@

WinSock HTTP@ FTP@ DNS@ SMPT/POP3@ LPR@ Traceroute

SLIP@ PPP@

Also:

World Wide Web; WWW
HTML 5 Web Apps
Internet Of Things, IOT, I.O.T.
Email and spam (lowercase, the food is SPAM uppercase)
Avoiding Virii; Anti Virus; Virus
Passwords
Cisco ASA 5500 device setup and Cisco Router Access Control Lists

See also:

http://www.afdc.doe.gov/afvehicles.html (Netscape only, and Java must be enabled) Whether it's ethical or not, getting information on your site's visitors is just plain neat. As one of the most requested scripts, this little gem will allow you to get the user's IP address
http://www.isi.edu The old god of the internet: Jon Postel
http://www.iana.org The comming god of the internet
http://www.rfc-editor.org/ The bible. The books of laws of the internet (the answer to every internet question is somewhere in this link)
Internet Architecture Board, (IAB). The elders
Internet Society (ISOC). The deacons
The Internet Engineering Steering Group (IESG). The faithfull
Internet Engineering Task Force (IETF). The congregation.
http://www.doc.ic.ac.uk/~ih/doc/pc_conn/index.html
http://www.private.org.il/tcpip_rl.html
http://www.itprc.com/tcp_ip.htm
Roll your own Intranet (cached 20020702)
Learn about TCP, IP, ICMP, UDP, Ethernet and others at the byte level, not at just the WinSock level. See the actual bytes which flash across the lines when you use the Internet. This may not be as practical as using the WinSock, but it's just about as deep as you can dig into the innards of the Internet. A must read for any serious Internet enthusiast.
http://www.ethereal.com/ Ethereal Sniffing the glue that holds the Internet together
http://www4.ulpgc.es/tutoriales/tcpip/pru/3376fm.htm TCP-IP Tutorial and Technical Overview
TCP/IP & Related Protocols Second Edition by Uyless Black ISBN 0-07-005560-2
TCP/IP Tutorial and Technical Overview a Redbook by IBM ISBN 0738412007
Port numbers
Top level domain list http://www.iana.org/cctld/cctld.htm
Shields UP! Really good internet connection security tester; click on the Shields UP! link then on the "Check my Shields" button.
If you are using A) MS Windows and B) a small local network and if you C) share resources (which is a common situation) then when you D) connect to the internet, these resources are made available to the internet BY DEFAULT! Since many people (most people) don't know this, it is a common opening for hackers.
Windows 95 and 98 automatically bind the local network device sharing services to the internet connection. It is then possible to send a request for a list of available (shared) devices from anywhere on the internet and your machine will respond with all the devices you share on your local network (hard drive, printers, etc...) and with your user name and local network name! Now the hacker only needs to guess the password (and many people just leave the password blank) to have access to whatever you have shared and maybe to the rest of the network.
This has nothing to do with Java or JavaScript or any program being loaded onto your system without your permission. The program is ALREADY ON your system if you are using Windows and it feels that you have given it permission to share this information if you have not removed the check marks next to "Client for Microsoft Networks" and "File and Printer sharing for Microsoft Networks" under Start: Settings: Control Panel: Network: TCP/IP: Properties: Bindings. Which I very much recommend that you do.
WATTCP is a very popular free DOS implementation of TCP/IP by Erick Engelke. C source to WATTCP and several samples are all available by anonymous FTP to dark.uwaterloo.ca. Also, be sure to visit the WATTCP homepage for more example programs and useful information.
http://people.qualcomm.com/karn/code/ka9qnos/ Self-contained TCP/IP stack for DOS
http://www.softwareqatest.com/qatweb1.html
http://www.phrozencrew.com/win32asm.htm win32Asm email program?
http://www.alphalink.com.au/~derekw/upntcvr.htm Realtime Control's UPN Laser Transceiver
http://home.vicnet.net.au/~upnet/ a laser based network
http://www.sysinternals.com TCP Viewer and other nice utilities.
http://hesketh.com/schampeo/projects/ipcalc/ IP calculator Javascript

See:

"In the beginning ARPA created the ARPANET.
And the ARPANET was without form and void.
And darkness was upon the deep.
And the spirit of ARPA moved upon the face of the network and ARPA said,
"Let there be a protocol," and thre was a protocol.
And ARPA saw that it was good. And ARPA said, "Let there be more
protocols," and it was so. And ARPA saw that is was good.
And ARPA said, "Let there be more networks," and it was so."

-- steward@deltanet.com, in misc.education

See:

Questions:

George Patterson Says:

Another very good resource for understanding TCP/IP at the byte level is to read some of the Linux network drivers and other source. A large amount of the code is commented and easy to understand even if you are not a seasoned programmer.