Appendix B Common Services
GS2210 Series User’s Guide
420
HTTP TCP 80 Hyper Text Transfer Protocol - a client/ server
protocol for the world wide web.
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 (MULTI CAST) User-Defined 2 I nternet Group Multicast Protocol is used when
sending packets to a specific group of hosts.
IKE UDP 500 The I nternet 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 Rem ote 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.
Table 206 Commonly Used Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION
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