49

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 pub-

lic ports that have to be opened for the application.

You can select known Internet services for this or assign ports or blocks of ports manu-

ally.

ì

To set up port triggering for a service, select

Port Triggering

in the

Address Trans-

lation (NAT)

menu.

ì

Select the required application from the

Predefined applications

list.

ì

Click on the

Add

button. The data for the required service is entered on the screen.

ì

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:

ì

Local protocol

: Select the protocol that is to be monitored for outgoing traffic.

ì

Local port

: Enter the port that is to be monitored for outgoing traffic.

ì

Public protocol

: Select the protocol that is to be allowed for incoming data traffic.

ì

Public port

: Enter the port that is to be opened for incoming data traffic.

ì

Description

: Enter a description to help you identify different entries.

ì

Select the option in the

Enabled

column.

ì

Click on the

Delete

button to delete an entry. Click on the

Add

button to add a new

entry.

ì

Click on

OK

to apply the settings.

Note:

You can enter a single port number, several individual port numbers separated by

commas, port blocks consisting of two port numbers separated by a hyphen, or

any combination of these, e.g.

80,90-140,180

.

50

Configuring the Advanced Settings

Port forwarding

If you configure port forwarding, the Gigaset SE361 WLAN outwardly assumes the role

of the server. It receives requests from remote users under its public IP address and

automatically redirects them to local PCs. The private IP addresses of the servers on the

local network remain protected.

Internet services are addressed via defined port numbers. The Gigaset SE361 WLAN

needs a mapping table of the port numbers to redirect the service requests to the server

that actually provides the service. For this, Port Forwarding has to be configured.

ì

To set up port forwarding for a service, select

Port Forwarding

in the

Address

Translation (NAT)

menu.

ì

Select the required application from the

Predefined applications

list.

ì

Click on the

Add

button. The data for the required service is entered on the screen.

ì

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:

ì

Select the protocol for the service you are providing from the

Protocol

list.

ì

Under

Public port

, enter the port number of the service you are providing.

ì

In the

Local port

field, enter the internal port number to which service requests are

to be forwarded.

ì

In the

Local IP address

field, enter the IP address of the PC which provides the serv-

ice.

Example: The Web server has been configured to react to requests on port 8080.

However, requests from websites enter by port 80 (default setting). If you add the

PC to the forwarding table and define port 80 as the public port and port 8080 as an

internal port, all requests from the Internet are diverted to the service with port

number 80 on the Web server of the PC you have defined with port 8080.

51

Configuring the Advanced Settings

ì

Click on

Add

.

ì

Click on

Delete

if you wish to delete the data in the relevant line again.

ì

Select the option in the

Enabled

column.

ì

Click on

OK

to apply the settings.

Opening the firewall for a selected PC (Exposed Host)

You can set up a client as an exposed host in your local network. Your device will then

forward all incoming data traffic from the Internet to this client. This will enable you, for

example, to operate your own Web server on one of the clients in your local network

and make it accessible to Internet users.

As an exposed host, your local client is directly visible on the Internet and therefore par-

ticularly exposed to risk (e.g. from hacker attacks). You should only activate this func-

tion where it is absolutely necessary (e.g. to operate a Web server) and where other

functions (e.g. port forwarding) are not adequate. In this case you should take appropri-

ate measures on the clients concerned.

ì

To set up a PC as an Exposed Host, select

Exposed Host

in the

Address Translation

(NAT)

menu.

ì

Enter the

Local IP address

of the PC that is to be enabled as Exposed Host.

ì

Enter a name for the PC in the

Comment

field.

ì

Enable the entry by selecting the option.

ì

Click on

Add

to add the entry to the list.

ì

Click on

Delete

to delete the entry from the list.

Note:

You can enter a single port number, several individual port numbers separated by

commas, port blocks consisting of two port numbers separated by a hyphen, or

any combination of these, e.g.

80,90-140,180

.

Note:

Only one PC per public IP address can be set up as Exposed Host (see also the section

entitled "Port forwarding" on page 50.

New

52

Configuring the Advanced Settings

ì

Click on

OK

to apply the settings.

Dynamic DNS

Any service you provide on the Internet can be accessed via a

Domain name

. Your

router's

Public IP address

is assigned to this domain name. If your Internet Service Pro-

vider for your local network's WAN connection assigns the IP address dynamically, the

IP address of the router may change. The assignment to the domain name will no longer

be valid and your service will no longer be available.

In this case you must ensure that the assignment of the IP address to the domain name

is constantly updated. This is handled by the dynamic DNS service (

DynDNS

). You can

use the DynDNS service to assign your Gigaset SE361 WLAN an individual static domain

name on the Internet even if it does not have a static IP address.

There are various providers on the Internet who offer a free DynDNS service. The Giga-

set SE361 WLAN uses the DynDNS service from

DynDNS.org

and from TZO.org. If you

use this DynDNS provider's service, then your service can be reached on the Internet as

a subdomain of one of this provider's domains.

If you have activated the device's DynDNS function, it will monitor its public IP address.

When this changes, it sets up a connection to the Internet site and updates its IP address

there.

ì

To use the router's DynDNS function, select

Dynamic DNS

in the

Advanced Settings

–

Internet

menu.

ì

Activate the

Dynamic DNS

function.

ì

From the

Service provider

list, select the service offering dynamic DNS

(DynDNS.org or TZO.com).

Note:

You will have to open an account with the provider before you can use the Gigaset

SE361 WLAN's DynDNS function. Follow the instructions on the provider's web site.

Enter the user data during configuration of the router.

53

Configuring the Advanced Settings

ì

Enter the

Domain name

,

User name

and

Password

. You will have received the nec-

essary information when registering with your

Service provider

.

ì

Click on

OK

to apply the settings.

QoS (Quality of Service)

Many communication and multimedia applications require high speed and large band-

widths 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 applica-

tions and provides undelayed, continuous data transfer where data packets with higher

priority are given transmission preference.

ì

In the

Advanced Settings

–

Internet

menu, select the entry

QoS

.

ì

Activate

Differentiated services

, i.e. the prioritisation of certain services for data

transfer between your network and the Internet.

ì

In the field next to

Upstream rate

, enter the maximum speed of your DSL line for

sending data into the Internet. The speed is specified in the contract with your Inter-

net provider.

ì

Click

OK

to accept the changes.