Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router

Example: List of some well-known and registered port numbers.

The Internet Assigned Numbers Authority (IANA) is the central coordinator for the assigning unique parameter values to the Internet protocols. Port numbers range from 0 to 65535, but only ports numbers 0 to 1023 are reserved for privileged services and are designated as “well- known ports” (Please refer to Table 5). The registered ports are numbered from 1024 through 49151. The remaining ports from 49152 through 65535 are referred to as dynamic or private ports.

Table 5: Well-known and registered Ports

Port Number

20

21

22

23

25

53

69

80

110

119

123

161

443

1503

1720

4000

7070

Protocol

TCP

TCP

TCP & UDP

TCP

TCP

TCP & UDP

UDP

TCP

TCP

TCP

UDP

TCP

TCP & UDP

TCP

TCP

TCP

UDP

Description

FTP Data

FTP Control

SSH Remote Login Protocol

Telnet

SMTP (Simple Mail Transfer Protocol)

DNS (Domain Name Server)

TFTP (Trivial File Transfer Protocol)

World Wide Web HTTP

POP3 (Post Office Protocol Version 3)

NEWS (Network News Transfer Protocol)

NTP (Network Time Protocol)

SNMP

HTTPS

T.120

H.323

ICQ

RealAudio

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Chapter 4: Configuration

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Billion Electric Company BiPAC 8501/8521, BiPAC 8500/8520 Example List of some well-known and registered port numbers, 150