Black Box 11N 2T2R Manual page 58

MAC Address: MAC stands for Media Access Control. A MAC address is the hardware address of a device connected to a net-
work. 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 hav-
ing 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
Telnet TCP
FTP TCP
SMTP TCP
POP3 TCP
H.323 TCP
SNMP UCP
SNMP Trap UDP
HTTP TCP
PPTP TCP
PC Anywhere TCP
PC Anywhere UDP
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 confu-
sion or misunderstanding.
Access point: An access point is an intelligent network device that forwards packets between different networks based on net-
work 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 (TCP/IP) and Unreliable Datagram Protocol (UDP). TCP/IP is the stan-
dard protocol for data transmission over the Internet. Both TCP and UDP are transport layer protocol. TCP performs proper error
detection and error recovery, and thus is reliable. UDP on the other hand is not reliable. They both run on top of the IP (Internet
Protocol), a network layer protocol.
WAN: Wide Area Network. A network that connects computers located in geographically separate areas (e.g. different buildings,
cities, countries). The Internet is a wide area network.
Port Number
23
21
25
110
1720
161
162
80
1723
5631
5632
Appendix B: Glossary
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