Appendix B Common Services
GS1915 Series User’s Guide
320
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 Multicast 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 or 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 email
server to another.
SNMP
TCP/UDP
161
Simple Network Management Program.
SNMP-TRAPS
TCP/UDP
162
Traps for use with the SNMP (RFC:1215).
Table 161 Commonly Used Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION