Section 5 | Glossary |
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Subnet Mask
A methodology that determines what the router will examine for the destination of an IP address. A router delivers packets using the network address.
Switch
On an Ethernet network, a switch filters frames based on the MAC address, in a manner similar to a bridge. A switch is more advanced because it can connect more than two segments.
T
TCP
Transmission Control Protocol on OSI transport layer four, provides reliable transport over the network for data transmitted using IP (network layer three). It is an
TCP/IP
The Transmission Control Protocol/Internet Protocol suite provides standards and rules for data communication between networks on the Internet. It is the worldwide Internetworking standard and the basic communications protocol of the Internet.
Tunnel
To place packets inside other packets to send over a network. The protocol of the enclosing packet is understood by each endpoint, or tunnel interface, where the packet enters and exits the network. VPNs rely on tunneling to create a secure network.
Tunneling requires the following protocol types:
A carrier protocol, such as TCP, used by the network that the data travels over
An encapsulating protocol, such as IPSec, L2F, L2TP, or PPTP, that is wrapped around the original data
A passenger protocol, such as IP, for the original data
WPCI810 |