ZyXEL Communications 802.11g ADSL 2+ 4-Port Security Gateway HW-D Series User Manual

Page 221

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P-662H/HW-D Series User’s Guide

Chapter 14 Content Access Control

221

MULTICAST(IGMP:0)

Internet Group Multicast Protocol is used when sending packets to a

specific group of hosts.

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(ICMP:0)

Packet INternet Groper is a protocol that sends out ICMP echo requests

to test whether or not a remote host is reachable.

PING(ICMP:0)

Packet INternet Groper is a protocol that sends out ICMP echo requests

to test whether or not a remote host is reachable.

PPTP(TCP:1723)

Point-to-Point Tunneling Protocol enables secure transfer of data over

public networks. This is the control channel.

PPTP_TUNNEL(GRE:0)

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.

TFTP(UDP:69)

Trivial File Transfer Protocol is an Internet file transfer protocol similar to

FTP, but uses the UDP (User Datagram Protocol) rather than TCP

(Transmission Control Protocol).

VDOLIVE(TCP:7000) Another

videoconferencing solution.

Table 81 Available Services (continued)

SERVICE

DESCRIPTION

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