On Thu, 2003-12-04 at 22:39, Joshua Banks wrote:
> Hello,
>
> I thought for any type of IP packet to go out onto the internet Zone
> (passed the local default gateway) that the packet needed to use either
> TCP or UDP to accomplish transportation?
It is the overway around...TCP and UDP need IP to transverse the
internet. The IP header lets the network know how to get from one point
to another by looking at the destiniation IP address, and the receiving
endpoint will know who sent the packet by the source address, so that it
can respond if it wishes to.
Inside the IP header is a protocol field, this field lets the receiving
end how to interpert the remainder of the packet and act accordingly.
Some common protocol numbers in decimal.
1 - ICMP
6 - TCP
17 - UPD
47 - GRE
Check out RFC 791 for more details.
--
[EMAIL PROTECTED] mailing list
