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NAT
NAT (Network Address Translation - also known as IP masquerading) enables an organization to
present itself to the Internet with one address. NAT converts the address of each LAN node into one IP
address for the Internet (and vice versa). NAT also provides a certain amount of security by acting as a
firewall by keeping individual IP addresses hidden from the WAN.
(Network) Administrator
The network administrator is the person who manages the LAN within an organization. The
administrator's job includes ensuring network security, keeping software, hardware, and firmware up-
to-date, and keeping track of network activity.
NTP
NTP (Network Time Protocol) is used to synchronize the realtime clock in a computer. Internet
primary and secondary servers synchronize to Coordinated Universal Time (UTC).
Packet
A packet is a portion of data that is transmitted in network communications. Packets are also
sometimes called frames and datagrams. Packets contain not only data, but also the destination IP
address.
Ping
Ping (Packet INternet Groper) is a utility used to find out if a particular IP address is present online,
and is usually used by networks for debugging.
Port
Ports are the communications pathways in and out of computers and network devices (routers and
switches). Most PCs have serial and parallel ports, which are external sockets for connecting devices
such as printers, modems, and mice. All network adapters use ports to connect to the LAN. Ports are
typically numbered.
PPPoE
PPPoE (Point-to-Point Protocol Over Ethernet) is used for running PPP protocol (normally used for
dial-up Internet connections) over an Ethernet.
PPTP
Point-to-Point Tunneling Protocol uses TCP to deal data for tunnel maintenance, and uses PPP for sum
up the information carried within the tunnel. The data carried within the tunnel can be compressed or
encrypted. The encryption method used is RSA RC4. PPTP can operate when the protocol is supported
only on the client and the server located on the other end that the client is corresponds with. No
support is essential from any of the routers or servers within the network the two PCs are connecting
across.
Protocol
A protocol is a rule that governs the communication of data.
RIP
RIP (Routing Information Protocol) is a routing protocol that is integrated in the TCP/IP protocol. RIP
finds a route that is based on the smallest number of hops between the source of a packet and its
destination.
Summary of Contents for I-Fly 899 A02-WR-54G ME01
Page 1: ...i I Fly Wireless Broadband Router User s Manual V1 0...
Page 49: ...45 PPPoE to obtain IP automatically...
Page 50: ...PPPoE with a fixed IP address...
Page 51: ...47 PPTP...
