ZyXEL p-660hwp Guia Do Utilizador

 Chapter 7 Wireless LAN

P-660HWP-Dx User’s Guide

The QoS screen by default allows you to automatically give a service a priority level 
according to the ToS value in the IP header of the packets it sends.

ToS defines the DS (Differentiated Service) field in the IP packet header. The ToS value of 
outgoing packets is between 0 and 255. 0 is the lowest priority.

WMM QoS checks the ToS in the header of transmitted data packets. It gives the application a 
priority according to this number. If the ToS is not specified, then transmitted data is treated as 
normal or best-effort traffic.

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 41   Commonly Used Services (continued)