Appendix E Common Services

Table 65 Commonly Used Services (continued)

NAME

PROTOCOL

PORT(S)

DESCRIPTION

HTTPS

TCP

443

HTTPS is a secured http session often used in e-

 

 

 

commerce.

 

 

 

 

ICMP

User-Defined

1

Internet Control Message Protocol is often used for

 

 

 

diagnostic or routing purposes.

 

 

 

 

ICQ

UDP

4000

This is a popular Internet chat program.

 

 

 

 

IGMP (MULTICAST)

User-Defined

2

Internet Group Management Protocol is used when

 

 

 

sending packets to a specific group of hosts.

 

 

 

 

IKE

UDP

500

The Internet Key Exchange algorithm is used for

 

 

 

key distribution and management.

 

 

 

 

IRC

TCP/UDP

6667

This is another popular Internet chat program.

 

 

 

 

MSN Messenger

TCP

1863

Microsoft Networks’ messenger service uses this

 

 

 

protocol.

 

 

 

 

NEW-ICQ

TCP

5190

An Internet chat program.

 

 

 

 

NEWS

TCP

144

A protocol for news groups.

 

 

 

 

NFS

UDP

2049

Network File System - NFS is a client/server

 

 

 

distributed file service that provides transparent file

 

 

 

sharing for network environments.

 

 

 

 

NNTP

TCP

119

Network News Transport Protocol is the delivery

 

 

 

mechanism for the USENET newsgroup service.

 

 

 

 

PING

User-Defined

1

Packet INternet Groper is a protocol that sends out

 

 

 

ICMP echo requests to test whether or not a remote

 

 

 

host is reachable.

 

 

 

 

POP3

TCP

110

Post Office Protocol version 3 lets a client computer

 

 

 

get e-mail from a POP3 server through a temporary

 

 

 

connection (TCP/IP or other).

 

 

 

 

PPTP

TCP

1723

Point-to-Point Tunneling Protocol enables secure

 

 

 

transfer of data over public networks. This is the

 

 

 

control channel.

 

 

 

 

PPTP_TUNNEL

User-Defined

47

PPTP (Point-to-Point Tunneling Protocol) enables

(GRE)

 

 

secure transfer of data over public networks. This is

 

 

 

the data channel.

 

 

 

 

RCMD

TCP

512

Remote Command Service.

 

 

 

 

REAL_AUDIO

TCP

7070

A streaming audio service that enables real time

 

 

 

sound over the web.

 

 

 

 

REXEC

TCP

514

Remote Execution Daemon.

 

 

 

 

RLOGIN

TCP

513

Remote Login.

 

 

 

 

RTELNET

TCP

107

Remote Telnet.

 

 

 

 

RTSP

TCP/UDP

554

The Real Time Streaming (media control) Protocol

 

 

 

(RTSP) is a remote control for multimedia on the

 

 

 

Internet.

 

 

 

 

SFTP

TCP

115

Simple File Transfer Protocol.

 

 

 

 

SMTP

TCP

25

Simple Mail Transfer Protocol is the message-

 

 

 

exchange standard for the Internet. SMTP enables

 

 

 

you to move messages from one e-mail server to

 

 

 

another.

 

 

 

 

SNMP

TCP/UDP

161

Simple Network Management Program.

 

 

 

 

SNMP-TRAPS

TCP/UDP

162

Traps for use with the SNMP (RFC:1215).

 

 

 

 

182

 

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