Glossary

Roaming

Roaming extends the range of a wireless LAN by using several Access points with the same SSID and the same radio channel and linked via Ethernet. The PCs in the network can switch dynamically between several access points without losing the existing network connection.

Router

A router directs data packets from one local network (LAN) to another via the fastest route. A router makes it possible to connect networks that have different network tech- nologies. For example, it can link a local network via Ethernet or WLAN technology to the Internet.

See also Bridge, Switch, Hub, Gateway

Server

A server makes a service available to other network components (Clients). The term "server" is often used to refer to a computer or PC. However, it can also mean an application that provides a particular service such as DNS or a Web service.

SMTP

Simple Mail Transfer Protocol

The SMTP Protocol is part of the TCP/IP protocol family. It governs the exchange of electronic mail on the Internet. Your Internet Provider gives you access to an SMTP server.

SNMP

Simple Network Management Protocol

The SNMP Protocol is part of the TCP/IP protocol family. It provides a simple procedure for network administration based on a system of shared information for management data and network management messages (known as traps), and reports the occurrence of events within the monitored network (e.g. an alarm message or notification of configuration changes).

SPI

Stateful Packet Inspection

Your device uses SPI to monitor and limit access by traffic incoming from the Internet. This allows it to identify and block certain types of attack such as Denial of Service (DoS). A typical DoS attack may involve a remote computer paralysing a system and then claiming to be the paralysed device in order to receive data intended for it.

SSID

Service Set Identifier

The SSID is used to identify the stations in a wireless network (WLAN). All wireless network components with the same SSID form a common network. The SSID can be assigned by the network operator.

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