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Appendix E Services
FSG1100HN User’s Guide
155
Examples of Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION
FTP
TCP
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.
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
(MULTICAST)
User-Defined
2
Internet Group Multicast Protocol is used
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
TCP/UDP
TCP/UDP
TCP/UDP
137
138
139
445
The Network Basic Input/Output System is
used for communication between computers
on a LAN.
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.