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4 Ports 11g Wireless ADSL2/2+ Router 175
NAT: Network Address Translation: The translation of an IP address of one network to a different IP address
known by another network. This gives an outside (WAN) network the ability to distinguish a device on the
inside (LAN) network, as the inside network has a private set of IP address assigned by the DHCP server not
known to the outside network.
PAP: Password Authentication Protocol: An authentication protocol in which authorization is done through a
user name and password.
PDU: Protocol Data Unit: A frame of data transmitted through the data link layer 2.
Ping: Packet Internet Groper: A utility used to determine whether a particular device is online or connected to
a network by sending test packets and waiting for a response.
PPP: Point-to-Point Protocol: A method of transporting and encapsulating IP packets between the user PC
and the ISP. PPP is full duplex protocol that is transmitted through a serial interface.
Proxy: A device that closes a straight connection from an outside network (WAN) to an inside network (LAN).
All transmissions must go through the proxy to get into or out of the LAN. This makes the internal addresses
of the devices in the LAN private.
PVC: Permanent Virtual Circuit: A software defined logical connection in a network; A Virtual Circuit that is
permanently available to the user.
RIP: Routing Information Protocol: A management protocol that ensures that all hosts in a particular network
share the same information about routing paths. In a RIP, a host computer will send its entire routing table to
another host computer every X seconds, where X is the supply interval. The receiving host computer will in
turn repeat the same process by sending the same information to another host computer. The process is
repeated until all host computers in a given network share the same routing knowledge.
RIPv1: RIP Version 1: One of the first dynamic routing protocols introduced used in the internet, RIPv1 was
developed to distribute network reach ability information for what is now considered simple topologies.
RIPv2: RIP Version 2: Shares the same basic concepts and algorithms as RIPv1 with added features such as
subnet masks, authentication, external route tags, next hop addresses, and multicasting in addition to
broadcasting.
Router Mode: Router Mode is used when there is more than one PC connected to the LAN-side Ethernet
and/or USB port. This enables the ADSL WAN access to be shared with multiple nodes on the LAN. Network
Address Translation (NAT) is supported so that one WAN-side IP address can be shared among multiple
LAN-side devices. DHCP is used to serve each LAN-side device and IP address.