data that corresponds to the Manufacturer ID (unique for each manufacturer), plus 3 bytes that are often used as the product’s serial number.

NAT: Network Address Translation. This process allows all of the computers on your home network to use one IP address. Using the broadband router’s NAT capability, you can access the Internet from any computer on your home network without having to purchase more IP addresses from your ISP.

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.

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).

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