Nortel Networks NB5PLUS4/W - Manual (Page 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 Office 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-defined 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 configure your Modem ports to use with ‘Delta Force’ .