Whatd Dose TCP and UDP mean?

Question

i just set up World of warcraft in my General Rule in Nortion. it says

Protocol: TCP and UDP
what dose that mean?

Answer 1

The others have a good idea of what TCP and UDP mean, but It would be helpfule to understand what a port is before you try to undertand the difference between TCP and UDP ports. Think of this way. Computers on the internet communicate through IP address as a standard way to identify themselves as particular computers i.e. www.yahoo.com is 209.73.186.238. Now, you may have multiple programs that run on your computer that use the internet to communicate, so how does your computer keep them seperate. This is where port addresses come into play. Consider port addresses as a way to direct a request to a specific person at a home. You get mail sent to your mom, dad, brother etc and if there is no indication on who the mail is sent to other than your home address, it may be up for grabs or thrown away. In the computer world Port 80 is what webpages use to communicate on.

Now I'll explain TCP and UDP, TCP is Transport Control Protocol and is designed to acknowledge that a message has been correctly received and will ask for missing messages to be resent many messages on the internet are fragmented and must be reassembled. UDP User Datagram Protocol doesn't acknowledge any missing messages and will continue on. Some programs use TCP because they need all the data to be verified to work properly and some use UDP because using TCP would cause the system to slow down if it has to catch up with missing messages. streaming video is an example of udp because you can miss a few frames without too much lag.

Answer 2

TCP and UDP are 'ports'. As you probably know, every item on the internet (PC, router, etc) gets an IP address. This is very comparable to the address on your home. Using the same analogy, a port is like telling your meter reader to use the side gate, the meter is right there, but telling a friend to open the garage door since you'll be working in there. The meter reader goes to his 'port' and your buddy will use his, while most other visitors will use the front port (door). Games use specific ports: These will be turned on automatically on your computer when you install the game, but they can be blocked by either your firewall software or your router. (In some cases your ISP can block them too, but, they normally don't block gaming ports all games use similar ports.) I suspect changing your firewall or router will cease your problem. I can't say for sure, because your message was truncated before the text of your error message was complete.

Answer 3

TCP -- Transmission (or Transfer) Control Protocol
UDP --User Datagram Protocol

Different? If TCP info sent is verified so if data loss in transmission system will resend it.
UDP send as is, no verificiation so data packet is smaller means send faster but there is no guarantee the receiver will got what sender sent.

Answer 4

TCP (and its cousin UDP) are the standard transport protocols for the Web's Internet Protocol (IP) traffic.
If you really want to know the technical differences then look at this:
http://www.laynetworks.com/Comparative%20analysis_TCP%20Vs%20UDP.htm

Answer 5

Well Norton Internet Security is practicaly a Firewall so u must allow all ports used by ur legit app/games to pass thrugh firewall. Otherwise u will not be able to play games online and use online software. If you wanna know more.....
Feel free to contact me on yahoo messenger for more details.

Answer 6

wants to know what ports the game uses to play with the outside word