ZyXEL Communications MAX-306, User Manual, Page: 385 / 405

Appendix H Common Services
User’s Guide
385
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.
STRM WORKS UDP 1558 Stream Works Protocol.
SYSLOG UDP 514 Syslog allows you to send system logs
to a UNIX server.
TACACS UDP 49 Login Host Protocol used for
(Terminal Access Controller Access
Control System).
TELNET TCP 23 Telnet is the login and terminal
emulation protocol common on the
Internet and in UNIX environments. It
operates over TCP/IP networks. Its
primary function is to allow users to
log into remote host systems.
Table 138 Commonly Used Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION