ZyXEL Communications wireless active fiber router Examples of Services continued, Name, Protocol

Appendix E Services

Examples of Services (continued)

NAME	PROTOCOL	PORT(S)	DESCRIPTION
FTP	TCP	20	File Transfer Program, a program to enable
	TCP	21	fast transfer of files, including large files that
			may not be possible by e-mail.
H.323.	TCP	1720	NetMeeting uses this protocol.
HTTP	TCP	80	Hyper Text Transfer Protocol – a
			client/server protocol for the World Wide
			Web.
HTTPS	TCP	443	HTTPS is a secured HTTP session often
			used in e-commerce.
ICMP	User-Defined	1	Internet Control Message Protocol is often
			used for diagnostic purposes.
ICQ	UDP	4000	This is a popular Internet chat program.
IGMP	User-Defined	2	Internet Group Multicast Protocol is used
(MULTICAST)			when sending packets to a specific group of
			hosts.
IKE	UDP	500	The Internet Key Exchange algorithm is
			used for key distribution and management.
IMAP4	TCP	143	The Internet Message Access Protocol is
			used for e-mail.
IMAP4S	TCP	993	This is a more secure version of IMAP4 that
			runs over SSL.
IRC	TCP/UDP	6667	This is another popular Internet chat
			program.
MSN Messenger	TCP	1863	Microsoft Networks’ messenger service uses
			this protocol.
NetBIOS	TCP/UDP	137	The Network Basic Input/Output System is
	TCP/UDP	138	used for communication between computers
			on a LAN.
	TCP/UDP	139
	TCP/UDP	445
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	User-Defined	1	Packet Internet Groper is a protocol that
			sends out ICMP echo requests to test
			whether or not a remote host is reachable.

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