Siemens Gigaset-204A Router Manual PDF (Setup & Configuration Guide)

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78

Configuring Advanced Settings

You can use

–

a single port number,

–

several port numbers separated by commas,

–

port blocks consisting of two port numbers separated by a dash, or

–

any combination of these (for example

80,90-140,180

).

ì

In the

Local port

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

to be forwarded.

You can only specify one port number here.

ì

Enter the IP address of the PC that provides the service in the

Local IP address

field.

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

However, the requests from web sites enter the Web server via port 80 (standard

value). 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 the port number 80 on the Web server of the PC you have defined

with port 8080.

ì

Comment

: Enter a description that makes it easy to identify different entries.

ì

Activate

Enabled

by ticking the check box.

ì

Click the

Add

button to add a new entry.

ì

Click the

Delete

button to delete an entry.

ì

Click

OK

to apply the settings.

Opening the firewall for a selected PC (Exposed Host)

You can set up a client in your local network to be a so-called "exposed host" (DMZ). Your

device will then forward all incoming data traffic from the Internet to this client. You can

then, for example, operate your own Web server on one of the clients in your local net-

work and make it accessible to Internet users.

As the exposed host, the local client is directly visible to the Internet and therefore par-

ticularly vulnerable to attacks (e.g. hacker attacks). Only activate this function if it is

absolutely necessary (e.g. to operate a Web server) and other functions (e.g. port for-

warding) are not adequate. In this case you should take appropriate measures for the

clients concerned.

Note:

Only one PC per public IP address can be set up as an Exposed Host (see also Port For-

warding on page 76).

Page 77 / 185

79

Configuring Advanced Settings

ì

In the

Advanced Settings

menu, select:

Internet

–

Address Translation (NAT)

–

Exposed Host

ì

Enter the

Local IP address

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

ì

Enter a name for the PC in the

Comment

field.

ì

Activate

Enabled

by ticking the check box.

ì

Click the

Add

button to add the entry to the list.

You can add more than one PC to the list, but you can only activate one of them.

ì

Click the

Delete

button to delete the entry from the list.

ì

Apply the settings by clicking

OK

.

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

address of the router can 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 updated regularly. This task is performed by the dynamic DNS service (

DynDNS

). You

can use the DynDNS service to assign the Giga762SX WLAN dsl an

individual fixed domain name on the Internet even if it does not have

a static IP address.

Various Internet service providers offer a free DynDNS service.

If you use the service of a DynDNS provider, your service can be

reached on the Internet as a subdomain of one of the DynDNS serv-

ice domains.

Page 78 / 185

80

Configuring Advanced Settings

One possible service is

DynDNS.org

(http://www.DynDNS.org). If you have activated

the device's DynDNS function, it will monitor its public IP address. When this changes,

the device will open a connection to DynDNS.org and update its IP address there.

ì

In the

Advanced Settings

menu, select:

Internet

–

Dynamic DNS

ì

Activate the

Dynamic DNS

function.

ì

Select a service from the

Service provider

list.

ì

Enter

Domain name

,

User name

and

Password

. You will have received all the nec-

essary information when you registered with your

Service provider

.

ì

Click

OK

to apply the settings.

Note:

You must have an account with the service you have chosen (e.g. DynDNS.org) before

you can use the DynDNS function. Follow the instructions on the provider's web site.

Then enter the user data when configuring the router.

Page 79 / 185

81

Configuring Advanced Settings

Routing

Your Internet service provider can permit you to set up a number of connection services.

The entire data traffic between your local network and the Internet uses the first con-

nection service (route) by default. After setting up various connection services

(page 62), you can change this default route and set up additional routes by assigning

data traffic to other connection services. Rules are provided to assist you, these define

criteria for determining which data traffic is assigned to which connection service.

ì

In the

Advanced Settings

menu, select:

Internet

–

Routing

ì

Activate or deactivate

Policy-based routing

for your Internet connection.

ì

Choose the

Policy type

, i.e. how you would like to define the various routes for data

traffic between your local network and the Internet:

–

Choose

Specify interface

to specify routes for clients in your local network

depending on the port used for connecting to your device (e.g. LAN port or wire-

less network connection).

–

Choose

Specify IP address

,

Specify IP address range

or

Specify MAC address

to specify routes for clients depending on your IP address or MAC address.

If you choose

Specify MAC address

, you can select PCs from the list of known

clients.

ì

Click

Delete

to delete an entry.

ì

Click

Add

to create a new entry with the entered data or for the

selected client.

ì

Click

OK

to save and apply the changes.

ì

Click

Cancel

to reject the changes.

Page 80 / 185

82

Configuring Advanced Settings

LAN configuration

You can use the LAN configuration to define an

IP address

for the Giga762SX WLAN dsl

and configure the DHCP server.

ì

In the

Advanced Settings

menu, select:

Local Network

Defining the private IP address for the Giga762SX WLAN dsl

On this screen you can change the device's

IP address

. The preset IP address is 10.0.0.2.

This is the

Private IP address

of the Giga762SX WLAN dsl. This is the address under which

the device can be reached in the local network. It can be freely assigned from the block

of available addresses. The IP address under which the Giga762SX WLAN dsl can be

reached from outside is assigned by the Internet service provider. The default

Subnet

mask

for the local network administered by the Giga762SX WLAN dsl

is 255.255.255.0.

ì

If you want to assign a different IP address to the Giga762SX WLAN dsl, enter your

chosen IP address in the boxes next to

IP address

.

Please make sure to note which subnet mask is set when assigning the IP address.

The preset subnet mask defines that the first three parts of the IP address must be

identical for all network components (including routers).

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