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Date: Fri, 29 Nov 1996 02:12:38 +0900
From: Makoto MATSUSHITA <matusita@ics.es.osaka-u.ac.jp>
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mita> ndtp$B$N(Bport$BHV9f$K$D$$$F$O<1<T$N$_$J$5$s$K$*G$$;$7$F(B($BFp<e(B)$B!$(B

STD2 $B$h$j(B($B$^$@(B RFC1700 $B$G$9$h$M(B?)$B!%(B

REGISTERED PORT NUMBERS

The Registered Ports are not controlled by the IANA and on most
systems can be used by ordinary user processes or programs executed by
ordinary users.

Ports are used in the TCP [RFC793] to name the ends of logical
connections which carry long term conversations.  For the purpose of
providing services to unknown callers, a service contact port is
defined.  This list specifies the port used by the server process as
its contact port.  While the IANA can not control uses of these ports
it does register or list uses of these ports as a convienence to the
community.

To the extent possible, these same port assignments are used with the
UDP [RFC768].

The Registered Ports are in the range 1024-65535.

***

$B$3$l$H$OBP>HE*$J$N$,$3$C$A$G$9$h$M!%F1$8$/(B STD2 $B$+$i!%(B

WELL KNOWN PORT NUMBERS

The Well Known Ports are controlled and assigned by the IANA and on
most systems can only be used by system (or root) processes or by
programs executed by privileged users.

Ports are used in the TCP [RFC793] to name the ends of logical
connections which carry long term conversations.  For the purpose of
providing services to unknown callers, a service contact port is
defined.  This list specifies the port used by the server process as
its contact port.  The contact port is sometimes called the
"well-known port".

To the extent possible, these same port assignments are used with the
UDP [RFC768].

The assigned ports use a small portion of the possible port numbers.
For many years the assigned ports were in the range 0-255.  Recently,
the range for assigned ports managed by the IANA has been expanded to
the range 0-1023.

***

$B$J$s$GA0<T$,(B "registered" $B$J$N$+$O$o$+$s$J$$$G$9$,!E!EL>A0$r$R$C$/$j$+(B
$B$($9$H;d$K$O7k9=G<F@$G$-$k$s$G$9$1$I(B ^_^;

-- -
Makoto `MAR_kun' MATSUSHITA
