ZyXEL Communications Corporation IX253P Manual De Usuario
Appendix G Common Services
Users Guide
318
FINGER
TCP
79
Finger is a UNIX or Internet related
command that can be used to find out
command that can be used to find out
if a user is logged on.
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.
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.
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 or routing
purposes.
often used for diagnostic or routing
purposes.
ICQ
UDP
4000
This is a popular Internet chat
program.
program.
IGMP
(MULTICAST)
(MULTICAST)
User-Defined
2
Internet Group Management Protocol
is used when sending packets to a
specific group of hosts.
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.
is used for key distribution and
management.
IRC
TCP/UDP
6667
This is another popular Internet chat
program.
program.
MSN Messenger
TCP
1863
Microsoft Networks’ messenger
service uses this protocol.
service uses this protocol.
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.
provides transparent file sharing for
network environments.
NNTP
TCP
119
Network News Transport Protocol is
the delivery mechanism for the
USENET newsgroup service.
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
that sends out ICMP echo requests to
test whether or not a remote host is
reachable.
POP3
TCP
110
Post Office Protocol version 3 lets a
client computer get e-mail from a
POP3 server through a temporary
connection (TCP/IP or other).
client computer get e-mail from a
POP3 server through a temporary
connection (TCP/IP or other).
Table 118 Commonly Used Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION