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Appendix D Services
P-660H-T1v3s User’s Guide
257
MSN Messenger TCP 1863 Microsoft Networks’ messenger
service uses this protocol.
NetBIOS TCP/UDP
TCP/UDP
TCP/UDP
TCP/UDP
137
138
139
445
The Network Basic Input/Output
System is used for communication
between computers in a LAN.
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).
POP3S TCP 995 This is a more secure version of POP3
that runs over SSL.
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.
ROADRUNNER TCP/UDP 1026 This is an ISP that provides services
mainly for cable modems.
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.
Table 75 Examples of Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION