Appendix C Common Services
LTE3301 Series User’s Guide
174
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 (GRE)
User-Defined
47
PPTP (Point-to-Point Tunneling Protocol) enables
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).
SQL-NET
TCP
1521
Structured Query Language is an interface to access
data on many different types of database systems,
including mainframes, midrange systems, UNIX
systems and network servers.
SSH
TCP/UDP
22
Secure Shell Remote Login Program.
Table 62 Commonly Used Services (continued)
NAME
PRO TO C O L
PO RT(S)
DESC RIPTIO N