On Tue, Jul 09, 2002 at 11:52:39AM +0200, Jan Humme wrote:
| Of course, HTTP runs over TCP, but who can explain why in /etc/services:
| http          80/tcp          www www-http    # WorldWideWeb HTTP
| http          80/udp          www www-http    # HyperText Transfer Protocol

The IANA frequently allocates the same port for both protocols.  Take a
look at RFC 1700.  You'll see that most services have both TCP and UDP
ports reserved, even though most probably use only one of them.

| Ports and port numbers are different for TCP and UDP, right?

Correct.  Look at ports 512, 513, and 514 in /etc/services.

-James


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