Internet

Ethernet
The Gigaset SE361 WLAN Wireless local area network (WLAN)
In a wireless local area network (WLAN) PCs are linked without wires or cables. For this the PCs have to be equipped with a wireless network adapter (WLAN adapter) such as a Gigaset USB Stick 54 or you can use a PC with a wireless option built in. We generally differentiate between two types of wireless network:
u Infrastructure mode u Ad-hoc mode
Infrastructure mode Infrastructure mode connects wireless and wired networks with one another. In addition to the mobile stations, the infrastructure mode needs an access point such as the Gigaset SE361 WLAN. In infrastructure mode the stations in the network always communicate via this access point. Each station that wants to be part of a wireless network must first be registered with the access point before it can exchange data. The access point establishes the connection between the mobile stations of a wireless network and a wired LAN (Ethernet) or the Internet. This is described as the device's router functionality. The router sends data packets that are not addressed to stations within the network "outside," and forwards data packets originating from "outside" to the appropriate station within the network. You can use the Gigaset SE361 WLAN to connect
u wirelessly networked PCs to the Internet and u wirelessly networked PCs to an Ethernet network.
Infrastructure mode is the default configuration of the Gigaset SE361 WLAN. This configuration is described in the quick guide that comes with the device. Ad-hoc mode An ad-hoc network is a wireless network that has been configured without an access point or a router. The mobile network components that communicate with each other directly and wirelessly form the network on an "ad-hoc" basis, i.e. as and when required. All the stations in the network have the same rights. Ad-hoc networks are used wherever communications networks have to be set up quickly and without any existing network infrastructure, and where participants are on the move.
Linking wireless networks with the Internet The Gigaset SE361 WLAN has a WAN port that permits all stations within its local area network to access the Internet simultaneously. To be able to use this functionality you need a DSL or cable connection and a suitable modem. You can usually obtain the line and a modem from an Internet service provider. Gigaset SE361 WLAN

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DSL modem

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This illustration shows the commonest method of application. One or more PCs communicate wirelessly with the Gigaset SE361 WLAN in infrastructure mode. The Gigaset SE361 WLAN forwards the data to the Internet via a DSL or cable modem. Data from the Internet flows back to the PC along the same route.
The Gigaset SE361 WLAN Linking a wireless network (WLAN) to an Ethernet (LAN)

Wireless local area networks can work easily together with existing Ethernet networks. If you wish to connect mobile stations to an existing wired network, you must group all the mobile stations into a wireless network in infrastructure mode.
Wireless local area network (WLAN)

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Access point
The Gigaset SE361 WLAN has four Ethernet interfaces (LAN ports). Up to four PCs can be connected directly to these LAN ports. All PCs can access the Internet via the Gigaset SE361 WLAN. Note: You can also connect an Ethernet router or switch to a LAN port to access a larger Ethernet. If you want to link the Gigaset WLAN network to an existing network, a large number of settings have to be applied. It is therefore not possible for us to provide a general example for this use; configuration must be defined separately for each individual case. We advise having such networks configured by a specialist.
Features and applications
The Gigaset SE361 WLAN's wide range of features make it ideal for a large number of applications, e.g.:

u Internet access

The Gigaset SE361 WLAN gives several users access to the Internet when a DSL or cable modem is connected. As many DSL providers set up Internet access via the PPPoE protocol, the Gigaset SE361 WLAN contains an integrated PPPoE Client, which means you no longer need to set up this service on your PC yourself. Shared Internet access If your Internet provider permits this, the Gigaset SE361 WLAN supports Internet access for up to 252 users. In practice, multiple users in your network can surf the Internet simultaneously using just one Internet access. u Setting up a local network The Gigaset SE361 WLAN permits connections for four devices via Ethernet ports with a transmission speed of 10 or 100 Mbps (with automatic recognition). for up to 32 mobile terminals via a radio interface with a transmission speed of up to 54 Mbps. It complies with the IEEE 802.11g standard and can work with all products that satisfy the IEEE 802.11g or 802.11b standard. Using a Gigaset SE361 WLAN makes it easy to set up a network at home or in small offices. For example, users can exchange data or share resources in the network, e.g. a file server or printer.

u Security functions

The Gigaset SE361 WLAN offers comprehensive security measures: Firewall protection against unauthorised access from the Internet All PCs in the local area network use the Public IP address of the Gigaset SE361 WLAN for their Internet connections, which makes them 'invisible' on the Internet. The Gigaset SE361 WLAN only allows access from the Internet if this has been requested from within the local area network. With the firewall the Gigaset SE361 WLAN also offers comprehensive protection against hacker attacks. Service filtering and URL filtering The Gigaset SE361 WLAN can filter Internet access. Here you determine which PCs may access which Internet services. In addition, you can deactivate access to certain Internet domains and sites (URL filtering). Access control and encryption for the local wireless network You can use various encryption methods and authentication methods (WEP, WPA/ WPA2-PSK, MAC access control) to prevent unauthorised access to your wireless LAN or make data illegible to unauthorised parties.

The four LAN sockets can automatically set the transmission speed to 10 Mbps Ethernet or 100 Mbps Fast Ethernet, and the transmission mode to Half duplex or Full duplex depending on the performance of the network adapter in your PC.
First Steps Connecting to the mains power supply
Note: Only use the mains adapter (12V 0.5A DC) that is supplied with the device.
Connect the mains adapter cable to the 12V 0,5A DC socket on the Gigaset SE361
Plug the mains adapter into a mains socket.
Your Gigaset SE361 WLAN is now ready for use:
u The power LED on the front lights up. u The WLAN LED lights up to indicate that the Gigaset SE361 WLAN is ready to open
wireless connections. The radio link to a PC that is connected by means of a wireless network adapter is established automatically if the network adapter has been configured with the same SSID as the Gigaset SE361 WLAN (see page 21). It can take a few seconds for the wireless connection to be established. The WLAN LED flashes when data is sent or received via this connection.
u The LAN LEDs light up if a device is connected to the respective LAN port by means
of an Ethernet cable. In order to communicate via the Gigaset SE361 WLAN, the network must be configured on the connected PCs. This usually takes place automatically (see page 76).
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The user interface

Once you have configured the network settings on a PC in your local network, you can then use that PC to configure the Gigaset SE361 WLAN with the aid of the Gigaset SE361 WLAN's user interface. You can use any browser for the configuration, the recommended products are Microsoft Internet Explorer 6.0 or higher, Mozilla Firefox 1.0 or higher. Note: To start the configuration environment you might need to deactivate the HTTP proxy for your browser (see page 82 for Windows XP and page 90 for Windows 2000). If you use Mozilla Firefox or if you use Internet Explorer and Windows XP Service Pack 2, you need to configure the popup blocker (see page 82for Windows XP and page 90 for Windows 2000).
Launching the user interface
To access the Gigaset SE361 WLAN's user interface:
Launch your Web browser. Enter the IP address of the Gigaset SE361 WLAN in the browser's address field.

functions, e.g. access control for local PCs to the Internet or blocking certain Internet sites (see page 45), u make the NAT settings needed to provide your own services on the Internet (see page 47), u set up dynamic DNS for a static Internet address on your device (see page 52), u configure the Quality of Service (see page 53). Here you can change the Private IP address of the Gigaset SE361 WLAN and make settings on the DHCP server (see page 54). Here you can configure the options for wireless communication (SSID and encryption) and restrict access to the Gigaset SE361 WLAN (see page 41). Here you can make or change various system settings, e.g. assign a password (see page 66), set the time (see page 65), or activate remote administration (see page 67). You can also back up the data on your Gigaset SE361 WLAN or load new firmware (see page 68).
Configuring the Internet connection
If you have configured your Gigaset SE361 WLAN using the two wizards, you will already have configured the WAN connection (Internet access). You can check or change these settings in the Internet menu. This menu also offers you a wide range of options for security settings and limiting access to the Internet as well as for providing your own services on the Internet.
On the Internet screen you can grant or block access to the Internet over your Gigaset SE361 WLAN.

Internet Connection

On this screen you can set up or change the configuration of your Internet connection. Any settings you make here must coincide with the features your Internet provider makes available to you. Incorrect data can lead to problems with your Internet connection.
If you wish to set up or change the settings for the Internet connection, select Internet Connection in the Advanced Settings Internet menu.
Select your Internet provider from the Service provider list. Enter the data you have been given by your Service provider in the relevant fields.
When you choose your Internet provider from the list, most of the data you need is entered by default on the screen. You can also often confirm the defaults for the Other option. Check that the Protocol complies with the data supplied by your Internet provider. Note: To configure the Internet connection successfully all fields must be filled in with the precise details given by your provider.
Select Always on if the connection is to remain set up when the Gigaset SE361 WLAN is switched on. Note: If you subscribe to a time-based service, this option can result in high connection charges. Select Connect on demand if applications such as a Web browser or an e-mail program are allowed to connect to the Internet automatically. In the Idle time before disconnect field, enter a period of time after which the Internet connection is to close down automatically if no data is transmitted (default setting: 3 minutes, range: 1 to 99 minutes). This time setting only applies to the Connect on demand option. A permanent connection is achieved using the Always on option. Select Connect manually if you always want to establish and end the connection to the Internet manually. If you subscribe to a time-based service this will save you high connection charges. How to establish a connection manually is described on page 64. connect to the Internet. Any Internet connection already in existence will be closed first. This displays information on the tests that have been carried out and their results. You will then be returned to the Internet Connection screen. If necessary, you can now correct your entries.

u You have to define a so-called trigger port for the application and also the protocol
(TCP or UDP) that this port uses. To this trigger port you then assign the public ports that have to be opened for the application. u The router checks all outgoing data for port number and protocol. If it recognises a match of port and protocol to a defined trigger port, then it will open the assigned public ports and notes the IP address of the PC that sent the data. If data comes back from the Internet via one of these public ports, it allows the data through and routes it to the right PC. A trigger event always comes from a PC within the local network. If a trigger port is addressed from outside, it is simply ignored by the router.
Note: u An application that is configured for port triggering can only be run by one user in the local network at a time. u As long as the public ports are open, they can be used by unauthorised persons to gain access to a PC in the local network. When the Gigaset SE361 WLAN is delivered, the NAT function (Network Address Translation) is activated, i.e. all IP addresses of PCs in the local network are mapped to the router's public IP address when accessing the Internet. You can use the NAT settings for the Gigaset SE361 WLAN to
u set up port triggering for special applications (see page 49), u set up the Gigaset SE361 WLAN as a virtual server by configuring Port Forwarding

(see page 50),

u open the firewall for selected PCs (see page 51).
Note: For the functions described below you must make sure that the IP addresses of the PCs do not change. If the IP addresses of the PCs are assigned via the DHCP server of the Gigaset SE361 WLAN, you must select the option Never expires for the settings on the Local Network screen for Lease time (see page 55) or assign static IP addresses for the PCs. You can activate or deactivate the NAT function (default setting: NAT function is activated).
In the Advanced Settings Internet menu, select Address Translation (NAT) and
mark the required option.
Configuring the Advanced Settings Port triggering
If you configure port triggering for a certain application, define a so-called trigger port and the protocol (TCP or UDP) this port uses. To this trigger port you then assign the public ports that have to be opened for the application. You can select known Internet services for this or assign ports or blocks of ports manually.
To set up port triggering for a service, select Port Triggering in the Address Translation (NAT) menu.
Select the required application from the Predefined applications list. Click on the Add button. The data for the required service is entered on the screen. Select the option in the Enabled column.
If the application you require is not in the list, you must enter the relevant data on the screen manually:

To use the router's DynDNS function, select
Dynamic DNS in the Advanced Settings Internet menu.
Activate the Dynamic DNS function. From the Service provider list, select the service offering dynamic DNS

(DynDNS.org or TZO.com).

Enter the Domain name, User name and Password. You will have received the necSchablone 2004_12_27
essary information when registering with your Service provider.

QoS (Quality of Service)

Many communication and multimedia applications require high speed and large bandwidths to transfer data between the local area network and the Internet. However, for many applications there is often only one Internet connection with limited capacity available. QoS (Quality of Service) divides this capacity between the different applications and provides undelayed, continuous data transfer where data packets with higher priority are given transmission preference.
In the Advanced Settings Internet menu, select the entry QoS.
Activate Differentiated services, i.e. the prioritisation of certain services for data
transfer between your network and the Internet.
In the field next to Upstream rate, enter the maximum speed of your DSL line for Click OK to accept the changes.
sending data into the Internet. The speed is specified in the contract with your Internet provider.

LAN configuration

You can use the LAN configuration to define an IP address for the Gigaset SE361 WLAN and configure the DHCP server.
Select Advanced Settings Local Network.
Defining the private IP address for the Gigaset SE361 WLAN On this screen you can change the device's IP address. The default IP address is 192.168.2.1. This is the Gigaset SE361 WLAN's Private IP address. It is the address under which the device can be reached on the local network. The address can be freely assigned from the block of available addresses. The IP address under which the Gigaset SE361 WLAN can be reached from outside is assigned by the Internet Service Provider.
If you want to assign the Gigaset SE361 WLAN a different IP address, enter it in the
fields next to IP address.
Select a number from the Subnet mask list.

We recommend using an address from a block that is reserved for private use. This address block is 192.168.1.1 192.168.255.254. Note: New settings only take effect after rebooting the Gigaset SE361 WLAN. If necessary, reconfigure the IP address on your PC (including one that is statically assigned) so that it matches the new configuration.
Configuring the DHCP server The Gigaset SE361 WLAN has a DHCP server, which is enabled on delivery. As a result, the IP addresses of the PCs are automatically assigned by the Gigaset SE361 WLAN. Note: u If the Gigaset SE361 WLAN's DHCP server is activated, you can configure the network setting on the PC so that the option Obtain an IP address automatically is set. To find out how to do this, please read the section entitled "Configuring the local network" on page 76.
u If you deactivate the DHCP server, you will have to assign a static IP address for the
PCs via the network settings.
To activate the DHCP server, select On. If the DHCP server is active, you can define a Lease time. The Lease time determines
the period for which the PCs keep the IP addresses assigned to them without any change. Note: If you select the Never expires option, the IP addresses are never changed. You must select this option if you want to make NAT or firewall settings using the IP addresses of the PCs, or else you must assign these PCs static IP addresses.
Define the range of IP addresses which the Gigaset SE361 WLAN should use to automatically assign IP addresses to PCs. Define the First issued IP address and the Last issued IP address. field.
You can define the name of a domain (Windows workgroup) in the Domain name
Assigning static IP addresses to individual PCs
Even if you have activated the DHCP server you can still assign a static IP address to individual PCs (e.g. when setting up these PCs for NAT functions).
Enter the MAC address and the name of the PC in the Device name field. Enter the IP address you wish to assign to the PC in the field below. Click on Add to add the entry to the list. Click on Delete to delete the entry from the list. Click on OK to apply the settings.

Select the Off option to deactivate SSID broadcast.

Sending power

Select the required sending power for your device.
We recommend that you select a sending power with a range to suit the spatial environment of your local network. A range that is much greater makes it easier to eavesdrop on your wireless data transmission. Network performance You can optimise Network performance in the following ways:

u Optimize throughput

maximises the data transmission rate in your network and ensures that data traffic is transmitted immediately.

u Optimize power saving

optimises power consumption in order to extend standby times for mobile devices in your network, e.g. notebooks, PDAs and WLAN handsets.

u Custom

This allows you to adjust the Network performance to suit your needs on the basis of the following items: Beacon interval defines the interval between two Beacons. Measured in milliseconds, default = 100 msecs. DTIM interval defines the interval between two DTIMs for devices in power-saving mode. Measured in number of beacons, default = 2 beacons.
Choose the desired Network performance.
Setting wireless security
If you send data over wireless channels, we recommend that you activate encryption (WEP or WPA) on your wireless network components. WPA is a more advanced procedure than WEP for protecting wireless networks. Dynamic keys based on TKIP (Temporal Key Integration Protocol) offer increased security. The new WPA2 standard is based on AES. We therefore recommend that you choose WPA2 or WPA encryption if it is supported by all components in your wireless network. Note: If WDS is enabled (see page 62) only WEP is available as encryption method.
In the Wireless Network menu, select Encryption.
The following security mechanisms are currently available:
u WPA2-PSK and WPA2-PSK / WPA-PSK (see page 58) u WEP encryption (Wired Equivalent Privacy), (see page 59)
WPA2-PSK and WPA2-PSK / WPA-PSK
WPA with Pre-shared Key (WPA-PSK) WPA-PSK is a special WPA mode that provides encryption protection for users at home and in small companies without a company authentication server. Encryption keys are automatically generated with the Pre-shared Key, and automatically changed (rekeying) and authenticated between the devices after a certain period of time (Rekey interval). Which standard of encryption you can choose depends on the components in your wireless network. Every PC (network adapter) that requires access to a wireless network protected by WPA must also support WPA. To find out whether and how you can use WPA on your PC, read your network adapter's operating instructions. If all components support WPA2, select the WPA2-PSK option. If you are using network adapters that only support WPA, select the WPA2-PSK / WPA-PSK option. The entries described below are the same for both options.

higher singnal strenght close to your Gigaset SE361 WLAN, it is displayed.
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Administration and status information
The Gigaset SE361 WLAN user interface includes several helpful functions for administration. You can
u open an Internet connection manually (see below), u select regional options (see page 65), u change the system password (see page 66), u set up remote administration (see page 67), u save, and if necessary restore, configuration data (see page 68), u reset the Gigaset SE361 WLAN to the factory settings (see page 69), u reboot the device (see page 69), u update the firmware (see page 69), u view information about the configuration and status of the Gigaset SE361 WLAN

(see page 71).

Connecting to the Internet manually
You can set up a manual connection to the Internet. To open or close an Internet connection manually:
Open the Gigaset SE361 WLAN start screen as described on page 24.
If you have already started the configuration environment, click on the Home tab at the top left of the window. If you have not yet started the configuration environment, start it now and log on.
Click on Connect to open a connection to the Internet.
To operate your Gigaset SE361 WLAN you can select the location, time zone, and the format for entering the date and time, as well as configure the application for a time server for Internet time.
In the Advanced Settings Administration menu, select the entry Regional

Options.

Select the country in which you are currently located from the list. You can set the
clock to change automatically to summer time and/or to the Time zone as you wish.
Select the required option and/or select the Time zone for your location. Select the required format for entering the date and time from the Date format and
Time format lists respectively.
Administration and status information Internet Time
The System time for your device is automatically synchronised with the time server on the Internet. The time of the Last synchronization with time server is displayed for your information.
If you wish to use your own time server, select the On option next to the Use custom

time servers field.

Enter the Internet addresses for the time servers in the Preferred time server and
Alternate time server fields respectively.

System Password

You can assign a System Password for the configuration environment of your Gigaset SE361 WLAN, and specify the period after which a session is to end automatically if no further entry is made.
In the Administration menu, select System Password.
After installation, the configuration of the Gigaset SE361 WLAN is protected by default with the System Passwordadmin. To prevent unauthorised changes to the configuration, you should set your own System Password and change it from time to time.

automatically options have already been activated, your PC is already configured for DHCP. Click on Cancel and close the following windows with OK to save your network configuration. matically options have not yet been activated, activate them now and click OK. Close the next windows.
If the Obtain an IP address automatically and Obtain DNS server address auto-
Configuring the local network Deactivating the HTTP proxy
Make sure that the HTTP proxy in your Web browser is deactivated. This function must be deactivated so that your Web browser can access your Gigaset SE361 WLAN's configuration screens. The following section describes the procedure for Internet Explorer and Mozilla Firefox. First determine which browser you are using and then follow the appropriate steps. Internet Explorer
Open Internet Explorer. Click on Tools Internet Options. In the Internet Options window click on the Connections tab. Click on Settings. Deactivate all options in the Settings for Local Network (LAN) window. Click on OK and then OK again to close the Internet Options window.
Open Mozilla Firefox. Click on Tools and then on Settings. In the Settings window, click on Connection Settings. In the Connection Settings window, select the option Direct connection to the

Internet.

Mozilla Firefox

Click on OK to finish.

Configuring the popup blocker
You must allow popups for the configuration program in order to start it. Internet Explorer If you are working with Windows XP Service Pack 2, popups are blocked by default. Carry out the following steps:
Right-click on the browser information bar. Select Allow popups from this screen. Confirm the dialogue window by clicking on OK.
The configuration screens for the Gigaset SE361 WLAN are now allowed as popups. You can make additional settings for popups within Internet Explorer
u via the Tools Popup Manager menu item or u via Tools Internet Options on the Privacy tab.
Mozilla Firefox Popups are blocked by default. Carry out the following steps:
Open Mozilla Firefox. Click on Tools and then on Settings. On the Settings screen, click on the Web Features tab.
Deactivate the option Block Popup Windows on the Web Features screen. Click on OK to finish.
Synchronising the TCP/IP settings with the Gigaset SE361 WLAN
You have now configured your PC so that it is ready to be connected to the Gigaset SE361 WLAN. You now have to release the old TCP/IP settings and synchronise them with the settings of your Gigaset SE361 WLAN.

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Glossary

Access point An access point such as the Gigaset SE361 WLAN is the central element in a wireless local area network (WLAN). It handles connection of the wireless-linked network components and regulates data traffic in the wireless network. The access point also serves as an interface to other networks, e.g. an existing Ethernet LAN or via a modem to the Internet. The network mode for wireless networks with an access point is called Infrastructure mode. Ad-hoc mode Ad-hoc mode describes wireless local networks (WLANs) in which the network components set up a spontaneous network without an Access point, e.g. several notebooks in a conference. All the network components are peers. They must be equipped with a wireless Network adapter. Beacon Beacons are data packets that are sent by devices in a wireless network to all other devices to indicate that they are available and ready to receive. Beacons are also used to synchronise the wireless network. A beacon interval is the period between two beacons in milliseconds. Bridge A bridge connects several network segments to form a joint network, e.g. to build a TCP/ IP network. The segments can have different physical characteristics, e.g. different connections such as Ethernet and wireless LANs. Linking individual segments via bridges makes it possible to build local networks of practically unlimited size. See also: Switch, Hub, Router, Gateway Broadcast A broadcast is a data packet that is not directed to a particular recipient but to all the components in a network. The Gigaset SE361 WLAN does not pass broadcast packets on to the Internet; they always remain within the local area network (LAN) administered by the Gigaset SE361 WLAN. BSSID Basic Service Set ID The BSSID is used for unique differentiation between one wireless network (WLAN) and another. In Infrastructure mode the BSSID is the MAC address of the Access point. In wireless networks in Ad-hoc mode the BSSID is the MAC address of any one of the participants.
Client A client is an application that requests a service from a server. For example, an HTTP client on a PC in a local network requests data, i.e. Web pages, from an HTTP server on the Internet. Frequently the network component (e.g. the PC) on which the client application is running is also called a client. Connect on demand Connect on demand means that applications such as a Web browser, Messenger and E-mail automatically open an Internet connection when they are launched. This can lead to high charges if you are not using a Flat rate. This function can be deactivated at the Gigaset SE361 WLAN to save call charges. DHCP Dynamic Host Configuration Protocol DHCP handles the automatic assignment of IP addresses to network components. It was developed due to the fact that in large networks especially the Internet defining IP addresses is very complex as participants frequently move, drop out or new ones join. A DHCP server automatically assigns the connected network components (DHCP Clients) Dynamic IP addresses from a defined IP pool range, thus saving a great deal of configuration work. In addition, it also allows address blocks to be used more effectively: Since not all participants are on the network at the same time, the same IP address can be assigned to different network components in succession as and when required. The Gigaset SE361 WLAN includes a DHCP server and can automatically assign IP addresses to PCs in the local network. You can specify that the IP addresses for certain PCs are never changed. DHCP server See DHCP DMZ Demilitarized Zone, see also Exposed Host DMZ describes a part of a network that is outside the Firewall. A DMZ is set up, as it were, between a network you want to protect (e.g. a LAN) and a non-secure network (e.g. the Internet). A DMZ is useful if you want to offer Serverservices on the Internet which, for security reasons, will not run behind the firewall, or if Internet applications do not function correctly behind a firewall. A DMZ permits unrestricted access from the Internet to only one or a few network components, while the other network components remain secure behind the firewall.

DNS Domain Name System DNS permits the assignment of IP addresses to computers or Domain names, which are easier to remember. A DNS server must administer this information for each LAN with an Internet connection. As soon as a page on the Internet is called up, the browser obtains the corresponding IP address from the DNS server so that it can establish the connection. On the Internet. the assignment of domain names to IP addresses is based on a hierarchical system. A local PC only knows the address of the local name server. This in turn knows all the addresses of the PCs in the local network and the next higher name servers, which again know addresses and the next higher name servers. DNS server See DNS Domain name The domain name is the reference to one or more Web servers on the Internet, e.g. siemens.com. The domain name is mapped to the respective IP address via the DNS service. DSL Digital Subscriber Line DSL is a data transmission technology in which a connection to the Internet can be run over normal telephone lines. A DSL connection is supplied by an Internet Provider. It requires a DSL modem. Dynamic IP address A dynamic IP address is assigned to a network component automatically by DHCP. This means that the IP address of a network component can change with every login or at certain intervals. See also Static IP address DTIM Delivery Traffic Indication Message A DTIM is a signal that is sent by an access point as part of a Beacon to a client device in power-saving mode to indicate that a data packet is ready for delivery. The DTIM interval defines the frequency with which a DTIM appears in a series of beacon packets.
DynDNS Dynamic DNS The assignment of Domain names and IP addresses is handled by the Domain Name Service (DNS). This service is now enhanced with so-called Dynamic DNS (DynDNS) for Dynamic IP addresses. This enables the use of a network component with a dynamic IP address as a Server on the Internet. DynDNS ensures that a service can always be addressed on the Internet under the same domain name regardless of the current IP address. Encryption Encryption protects confidential information against unauthorised access. With an encryption system, data packets can be sent securely over a network. The Gigaset SE361 WLAN offers WEP encryption and WPA encryption for secure data transmission over wireless networks. Ethernet Ethernet is a network technology for local networks (LANs) defined by the IEEE as standard IEEE 802.3. Ethernet uses a baseband cable with a data transmission rate of 10, 100, or 1000 Mbps. Exposed Host Exposed Host refers to a PC outside the firewall. See also DMZ Firewall Firewalls are used by network operators as protection against unauthorised external access. This involves a whole bundle of hardware and software actions and technologies that monitor and control the data flow between the private network to be protected and an unprotected network such as the Internet. See also NAT Flat rate A flat rate is a special billing system for Internet connections. The Internet Provider charges a monthly fee regardless of the duration and number of logins. Full duplex Data transmission mode in which data can be sent and received simultaneously. See also Half duplex Gateway A gateway is a device used to connect networks with completely different architectures (addressing, protocols, application interfaces, etc.). Although it is not totally correct, the term is also used as a synonym for Router. See also Bridge, Hub, Router, Switch

Internet Provider An Internet provider (Internet Service Provider) offers access to the Internet for a fee. IP Internet protocol The IP Protocol is one of the TCP/IP protocols. It is responsible for addressing parties in a network using IP addresses, and routes data from the sender to the recipient. It decides the paths along which the data packets travel from the sender to the recipient in a complex network (routing). IP address An IP address is a network-wide unique address for a network component in a network based on the TCP/IP protocol (e.g. in a local area network (LAN) or on the Internet). The IP address has four parts (values from 0 to 255) separated by periods (e.g. 192.168.1.1). The IP address consists of the network address and the PC address. Depending on the Subnet mask, one part of the IP address (mostly one, two or three parts) form the network address, the remainder the PC address. You can find out the IP address of your PC by entering ipconfig in the command prompt. IP addresses can be assigned manually (see Static IP address) or automatically (see Dynamic IP address). On the Internet Domain names are normally used instead of IP addresses. DNS is responsible for assigning domain names to IP addresses. The Gigaset SE361 WLAN has a Private IP address and a Public IP address. IP pool range The Gigaset SE361 WLAN's IP address pool defines a range of IP addresses that the router's DHCP server can use to assign Dynamic IP addresses. ISP Internet Service Provider, see Internet Provider
LAN Local Area Network A local area network (or local network) links network components so that they can exchange data and share resources. The physical range is restricted to a particular area (a site). As a rule the users and operators are identical. A local network can be connected to other local networks or a wide area network (WAN) such as the Internet. With the Gigaset SE361 WLAN you can set up a wired local Ethernet network and a wireless IEEE 802.11g standard network (WLAN). Lease time The lease time defines the period for which PCs keep the Dynamic IP address assigned to them by the DHCP server without changing it. Local IP address See Private IP address MAC address Media Access Control The MAC address is used for the globally unique identification of a Network adapter. It comprises six parts (hexadecimal numbers), e.g. 00-90-96-34-00-1A. The MAC address is assigned by the network adapter's manufacturer and should not be changed. Mbps Million bits per second Specification of the transfer speed in a network. MER MAC Encapsulated Routing Special form of transmission protocol for the Internet. MRU Maximum Receive Unit The MRU defines the maximum user data volume within a data packet. MTU Maximum Transmission Unit The MTU defines the maximum length of a data packet that can be carried over the network at any one time.