4. Appendix
149 A
irLive WN-250R User’s Manual
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 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