Nortel-networks NB5PLUS4/W Manual de usuario descargar pdf (Pagina 63)

YML754 Rev1 NB5Plus4/W User Guide

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from 0 to 65535, but only ports numbers 0 to 1023 are reserved for privileged serv-

ices and are designated as “well-known ports”. The registered ports are numbered

from 1024 through 49151. The remaining ports, referred to as dynamic ports or

private ports, are numbered from 49152 through 65535.

Examples of well-known and registered port numbers are shown in Table 4, for fur-

ther information, please see IANA’s website at: http://www.iana.org/assignments/

port-numbers

Well-know and registered Ports

Port Number Protocol Description

20 TCP FTP Data

21 TCP FTP Control

22 TCP & UDP SSH Remote Login Protocol

23 TCP Telnet

25 TCP SMTP (Simple Mail Transfer Protocol)

53 TCP & UDP DNS (Domain Name Server)

69 UDP TFTP (Trivial File Transfer Protocol)

80 TCP World Wide Web HTTP

110 TCP POP3 (Post Ofce Protocol Version 3)

119 TCP NEWS (Network News Transfer Protocol)

123 UDP NTP (Network Time Protocol)

443 TCP & UDP HTTPS

1503 TCP T.120

1720 TCP H.323

4000 TCP ICQ

7070 UDP RealAudio

Easy Port Forwarding: Applying Pre-Defined Rules

Available pre-dened rules are categorised according to the application type. Click

the Radio Button adjacent to the appropriate Category, and then select the required

application name. Click on the Add button to move the application into the Applied

Rules box. In the example shown on the previous page, ‘Delta Force’ has been se-

lected from the list of Available Rules and is about to be copied to Applied Rules. In

the example, this will congure your Modem ports to use with ‘Delta Force’ .

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Nortel-networks NB5PLUS4/W Manual de usuario Pagina 63