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ISP: Internet Service Provider. An ISP is a business that provides connectivity
to the Internet for individuals and other businesses or organizations.
LAN: Local Area Network. A LAN is a group of computers and devices
connected together in a relatively small area (such as a house or an office).
Your home network is considered a LAN.
MAC Address: MAC stands for Media Access Control. A MAC address is the
hardware address of a device connected to a network. The MAC address is a
unique identifier for a device with an Ethernet interface. It is comprised of
two parts: 3 bytes of 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 access
point’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