Application Protocol
Port
Number
Telnet TCP
23
FTP TCP
21
SMTP TCP
25
POP3 TCP
110
H.323 TCP
1720
SNMP UCP
161
SNMP Trap UDP
162
HTTP TCP
80
PPTP TCP
1723
PC Anywhere TCP
5631
PC Anywhere UDP
5632
PPPoE:
Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a secure data
transmission method originally created for dial-up connections; PPPoE is for Ethernet
connections.
PPPoE
relies on two widely accepted standards, Ethernet and the Point-to-Point
Protocol. It is a communications protocol for transmitting information over Ethernet between
different manufacturers.
Protocol:
A protocol is a set of rules for interaction agreed upon between multiple parties so that
when they interface with each other based on such a protocol, the interpretation of their behavior
is well defined and can be made objectively, without confusion or misunderstanding.
Router:
A router is an intelligent network device that forwards packets between different
networks based on network layer address information such as IP addresses.
Subnet Mask:
A subnet mask, which may be part of the TCP/IP information provided by your ISP,
is a set of four numbers (e.g. 255.255.255.0) configured like an IP address. It is used to create IP
address numbers used only within a particular network (as opposed to valid IP address numbers
recognized by the Internet, which must be assigned by InterNIC).
TCP/IP, UDP:
Transmission Control Protocol/Internet Protocol (TCP/IP) and Unreliable Datagram
Protocol (UDP). TCP/IP is the standard protocol for data transmission over the Internet. Both TCP
and UDP are transport layer protocol. TCP performs proper error detection and error recovery,
and thus is reliable. UDP on the other hand is not reliable. They both run on top of the IP (Internet
Protocol), a network layer protocol.
WAN:
Wide Area Network, a network that connects computers located in geographically separate
areas (e.g. different buildings, cities, countries). The Internet is a wide area network.
Web-based Management Graphical User Interface (GUI):
Many devices support a graphical
user interface that is based on the web browser. This means the user can use the familiar
Netscape or Microsoft Internet Explorer to Control/configure or monitor the device being managed.
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