ZyXEL Communications Corporation EMG2881-T20A Manuale Utente

Appendix C Common Services

EMG2881-T20A User’s Guide

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 47   Commonly Used Services (continued)