ZyXEL Communications P-870HN-51B - V1.0 Manual page 334

Appendix E Common Services
Table 111 Commonly Used Services (continued)
NAME
ESP
(IPSEC_TUNNEL)
FINGER
FTP
H.323
HTTP
HTTPS
ICMP
ICQ
IGMP
(MULTICAST)
IKE
IRC
MSN Messenger
NEW-ICQ
NEWS
NFS
NNTP
PING
POP3
334
PROTOCOL PORT(S)
User-Defined 50
TCP 79
TCP 20
TCP 21
TCP 1720
TCP 80
TCP 443
User-Defined 1
UDP 4000
User-Defined 2
UDP 500
TCP/UDP 6667
TCP 1863
TCP 5190
TCP 144
UDP 2049
TCP 119
User-Defined 1
TCP 110
DESCRIPTION
The IPSEC ESP (Encapsulation
Security Protocol) tunneling protocol
uses this service.
Finger is a UNIX or Internet related
command that can be used to find out
if a user is logged on.
File Transfer Program, a program to
enable fast transfer of files, including
large files that may not be possible by
e-mail.
NetMeeting uses this protocol.
Hyper Text Transfer Protocol - a
client/server protocol for the world
wide web.
HTTPS is a secured http session often
used in e-commerce.
Internet Control Message Protocol is
often used for diagnostic or routing
purposes.
This is a popular Internet chat
program.
Internet Group Management Protocol
is used when sending packets to a
specific group of hosts.
The Internet Key Exchange algorithm
is used for key distribution and
management.
This is another popular Internet chat
program.
Microsoft Networks' messenger
service uses this protocol.
An Internet chat program.
A protocol for news groups.
Network File System - NFS is a client/
server distributed file service that
provides transparent file sharing for
network environments.
Network News Transport Protocol is
the delivery mechanism for the
USENET newsgroup service.
Packet INternet Groper is a protocol
that sends out ICMP echo requests to
test whether or not a remote host is
reachable.
Post Office Protocol version 3 lets a
client computer get e-mail from a
POP3 server through a temporary
connection (TCP/IP or other).
P-870HN-51b User's Guide