ZyXEL Communications ZYWALL10 - Manual (Page 197)

ZyWALL 10 Internet Security Gateway
16-8 Creating Custom Rules
Table 16-2 Predefined Services
SERVICE DESCRIPTION
BGP(TCP:179) Border Gateway Protocol.
BOOTP_CLIENT(UDP:68) DHCP Client.
BOOTP_SERVER(UDP:67) DHCP Server.
CU-SEEME(TCP/UDP:7648,
24032) A popular videoconferencing solution from White Pines Software.
DNS(UDP/TCP:53) Domain Name Server, a service that matches web names (e.g.
www.zyxel.com ) to IP numbers.
FINGER(TCP:79) Finger is a UNIX or Internet related command that can be used to
find out if a user is logged on.
FTP(TCP:20.21) File Transfer Program, a program to enable fast transfer of files,
including large files that may not be possible by e-mail.
HTTP(TCP:80) Hyper Text Transfer Protocol - a client/server protocol for the world
wide web
HTTPS HTTPS is a secured http session often used in e-commerce.
ICMP ICMP service allows normal ICMP packets to go through.
ICQ(UDP:4000) This is a popular Internet chat program.
IRC(TCP/UDP:6667) This is another popular 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.
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.