ZyXEL Communications ZYWALL USG 20 - Page 802

Appendix B Common Services
ZyWALL USG 20/20W User’s Guide
802
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 269 Commonly Used Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION