146
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 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).