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Appendix B Common Services
XMG1915 Series User’s Guide
383
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 207 Commonly Used Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION
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