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GLOSSARy
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, a communications protocol
for transmitting data over the ethernet among different manufacturers,
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.
protocol:
A protocol is a set of rules for interaction agreed upon by
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 a 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 and
Unreliable datagram Protocol. TCP/IP is the standard protocol for
data transmission over the Internet. Both TCP and UdP are transport
layer protocols. TCP performs proper error detection and error
recovery, and thus is reliable. UdP, on the other hand, is not reliable.
Both run on top of the IP (Internet Protocol), a network layer protocol.
wan:
A Wide Area Network connects computers in separate areas
(e.g., different buildings, cities, countries). The Internet is a WAN.
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 MS
Internet explorer to control or monitor the device being managed.
