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Port: Network Clients (LAN PC) uses port numbers to distinguish one network
application/protocol over another. Below is a list of common applications and
protocol/port numbers:
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.
Access point: A access point 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
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