ZyXEL NBG420N Manuel d'utilisateur Page 322

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Appendix F Services
NBG420N User’s Guide
322
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 in 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.
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).
POP3S TCP 995 This is a more secure version of POP3 that
runs over SSL.
PPTP TCP 1723 Point-to-Point Tunneling Protocol enables
secure transfer of data over public
networks. This is the control channel.
Table 131 Examples of Services (continued)
NAME PROTOCOL PORT(S) DESCRIPTION
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