GLOSSARY 121
Network Interface A circuit board installed into a piece of computing equipment, for Card (NIC) example, a computer, that enables you to connect it to the network. A
NIC is also known as an adapter or adapter card.
Protocol A set of rules for communication between devices on a network. The rules dictate format, timing, sequencing and error control.
PPPoE
PPTP
RIP Routing Information Protocol. RIP allows an administrator to set up routing information on one RIP enabled device, and have that routing information replicated to all RIP enabled devices on the network.
Router A device that acts as a central hub by connecting to each computer's network interface card and managing the data traffic between the local network and the Internet.
Server A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues.
SPI Stateful Packet Inspection. This feature requires the firewall to remember what outgoing requests have been sent and only allow responses to those requests back through the firewall. This way,
SSID Service Set Identifier. Some vendors of wireless products use SSID interchangeably with ESSID.
Subnet Address An extension of the IP addressing scheme that allows a site to use a single IP network address for multiple physical networks.