Reference Manual for the Model DG834 ADSL Firewall Router
Glossary
3
 
Network Address 
Translation
A technique by which several hosts share a single IP address for access to the 
Internet.
packet
A block of information sent over a network. A packet typically contains a 
source and destination network address, some protocol and length 
information, a block of data, and a checksum.
PPP
See Point-to-Point Protocol.
PPPoA
See PPP over ATM
PPPoE
See PPP over Ethernet
PPP over ATM
PPPoA. PPP over ATM is a protocol for connecting remote hosts to the 
Internet over an always-on connection by simulating a dial-up connection.
PPP over Ethernet
PPPoE. PPP over Ethernet is a protocol for connecting remote hosts to the 
Internet over an always-on connection by simulating a dial-up connection.
PPTP
Point-to-Point Tunneling Protocol. A method for establishing a virtual private 
network (VPN) by embedding Microsoft’s network protocol into Internet 
packets.
PSTN
Public Switched Telephone Network.
Point-to-Point 
Protocol
PPP. A protocol allowing a computer using TCP/IP to connect directly to the 
Internet.
RFC
Request For Comment. Refers to documents published by the Internet 
Engineering Task Force (IETF) proposing standard protocols and procedures 
for the Internet. RFCs can be found at www.ietf.org.
RIP
See Routing Information Protocol.
router
A device that forwards data between networks. An IP router forwards data 
based on IP source and destination addresses.
Routing Information 
Protocol
A protocol in which routers periodically exchange information with one 
another so that they can determine minimum distance paths between sources 
and destinations.
subnet mask
See netmask.
UTP
Unshielded twisted pair. The cable used by 10BASE-T and 100BASE-Tx 
Ethernet networks.