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Appendix E Services
Table 139 Examples of Services
NAME
AH
(IPSEC_TUNNEL)
AIM
AUTH
BGP
BOOTP_CLIENT
BOOTP_SERVER
CU-SEEME
DNS
ESP
(IPSEC_TUNNEL)
FINGER
FTP
H.323
HTTP
HTTPS
ICMP
ICQ
IGMP
(MULTICAST)
IKE
IMAP4
IMAP4S
IRC
414
PROTOCOL
PORT(S)
User-Defined
51
TCP
5190
TCP
113
TCP
179
UDP
68
UDP
67
TCP/UDP
7648
TCP/UDP
24032
TCP/UDP
53
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
143
TCP
993
TCP/UDP
6667
DESCRIPTION
The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
AOL's Internet Messenger service.
Authentication protocol used by some
servers.
Border Gateway Protocol.
DHCP Client.
DHCP Server.
A popular videoconferencing solution
from White Pines Software.
Domain Name Server, a service that
matches web names (for instance
www.zyxel.com) to IP numbers.
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 Protocol, 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 purposes.
This is a popular Internet chat
program.
Internet Group Multicast Protocol is
used when sending packets to a
specific group of hosts.
The Internet Key Exchange algorithm
is used for key distribution and
management.
The Internet Message Access Protocol
is used for e-mail.
This is a more secure version of IMAP4
that runs over SSL.
This is another popular Internet chat
program.
P-660HN-F1A User's Guide
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