17 GLOSSARY |
|
TERM | DEFINITION |
| communications. |
splitter | A device that divides the signal from an input cable between |
| two or more cables. |
SSID | The Service Set Identifier or network name is a unique |
| identifier that wireless clients use to associate with an |
| access point to distinguish between multiple WLANs in the |
| same area. All clients on a WLAN must have the same SSID |
| as the access point. |
stateful- | A type of firewall that tracks each connection, traversing all |
inspection | firewall interfaces to ensure validity. In addition to examining |
| the source and destination in the packet header based on static |
| rules, a stateful inspection firewall: |
| • Examines packet headers via the context established by |
| previous packets that traversed the firewall |
| • Monitors the connection state and saves it in a table |
| • Closes ports until a connection to a specific port is |
| requested |
| • May examine the packet contents up through the |
| application layer to determine more than just the source |
| and destination |
| A stateful inspection firewall is more advanced than a static |
| filter firewall. |
static filter | A type of firewall that examines the source and destination in the |
| packet header based on |
static IP | An IP address that is permanently assigned to a host. |
address | Normally, a static IP address must be assigned manually. The |
| opposite of dynamic IP address. |
static route | A |
station | IEEE 802.11b term for wireless client. |
subscriber | A home or office user who accesses television, data, or other |
| services from an Internet Service provider. |
subnet mask | A bit mask that is logically ANDed with the destination IP address |
| of a packet to determine the network address. A router routes |
| packets using the network address. |
subnetwork | A part of a network; commonly abbreviated “subnet.” When |
| subnetting is used, the host portion of the IP address is |
| divided into a subnet and host number. Hosts and routers |
| use the subnet mask to identify the bits used for the network |
| and subnet number. |
switch | On an Ethernet network, a switch filters frames based on the |
| 156 |