ZyXEL Communications GS1920-48HPv2, Руководство пользователя

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Appendix B Common Services
GS1920v2 Series User’s Guide
409
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.
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.
IRC TCP/UDP 6667 This is another popular Internet chat program.
MSN Messenger TCP 1863 Microsoft Networks’ messenger 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.
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).
PPTP TCP 1723 Point-to-Point Tunneling Protocol enables secure
transfer of data over public networks. This is the
control channel.
PPTP_TUNNEL (GRE) User-Defined 47 PPTP (Point-to-Point Tunneling Protocol) enables
secure transfer of data over public networks. This
is the data channel.
RCMD TCP 512 Remote Command Service.
REAL_AUDIO TCP 7070 A streaming audio service that enables real time
sound over the web.
REXEC TCP 514 Remote Execution Daemon.
RLOGIN TCP 513 Remote Login.
RTELNET TCP 107 Remote Telnet.
RTSP TCP/UDP 554 The Real Time Streaming (media control)
Protocol (RTSP) is a remote control for multimedia
on the Internet.
SFTP TCP 115 Simple File Transfer Protocol.
SMTP TCP 25 Simple Mail Transfer Protocol is the message-
exchange standard for the Internet. SMTP
enables you to move messages from one e-mail
server to another.
SNMP TCP/UDP 161 Simple Network Management Program.
SNMP-TRAPS TCP/UDP 162 Traps for use with the SNMP (RFC:1215).
Table 198 Commonly Used Services (continued)
NAME PRO TO C O L PO RT(S) DESC RIPTIO N