User module

Transparent Mode

APPLICATION NOTE

USED SYMBOLS

Used symbolsDanger – important notice, which may have an influence on the user’s safety or the functionof the device.

Attention – notice on possible problems, which can arise in specific cases.

Information, notice – information, which contains useful advice or special interest.

Conel s.r.o., Sokolska 71, 562 04 Usti nad Orlici, Czech Republic

Manual issued in CZ, October 9, 2014

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CONTENTS

Contents

1 Description of user module 1

2 Configuration 2

2.1 Automatic configuration during the module installation . . . . . . . . . . . . . . 22.2 Automatic forwarding from the router . . . . . . . . . . . . . . . . . . . . . . . . 32.3 Access to the router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Recommended literature 5

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LIST OF FIGURES

List of Figures1 Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Reconfiguration of Lease Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Configuration of forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Access to the router from the outside . . . . . . . . . . . . . . . . . . . . . . . . 4

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1. DESCRIPTION OF USER MODULE

1. Description of user module

User module Transparent Mode is not contained in the standard router firmware. Uploadingof this user module is described in the Configuration manual (see [1, 2]).

The user module is v2 and v3 router platforms compatible.

After loading the user module into any Conel router, this router becomes "invisible" forremote devices. It is available only for a device which is located behind the router. The defaultIP address of the router is 192.168.1.1 (configuration can be performed only by logged in user– name and password is root by default). All communication with the device which is locatedbehind this router runs directly. This means that if a user enters the IP address of the SIM cardin the router, will communicate with the interface of the device behind this router.

Figure 1: Scheme

The user module has no web interface and it is not necessary to activate it (it’s active im-mediately after uploading).

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2. CONFIGURATION

2. Configuration

2.1 Automatic configuration during the module installation

During the installation of Transparent Mode module to the router, DHCP server (dynamicdistributing of IP addresses) is disabled. IP address is allocated only when PPP connectionis established. For cases when PPP connection is not established, it is necessary to set astatic IP address for a device behind the router. The moment the user module is uninstalled,the router is reconfigured to its original state. If the DHCP server was enabled before installingTransparent Mode module, after uninstalling this module will be enabled again.

Figure 2: Reconfiguration of Lease Time

During the installation of this module, Masquerade outgoing packets item (on NAT page ofrouter web interface) is disabled. This item must never be enabled!

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2. CONFIGURATION

2.2 Automatic forwarding from the router

For automatic forwarding from the router to the device behind this router is necessary toenable the protocol through which access to this device will be allowed. This is done usingthe form on the NAT page (see figure below). By default, access through each of protocols isdisabled.

Figure 3: Configuration of forwarding

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2. CONFIGURATION

2.3 Access to the router

As already mentioned in the first chapter, router with Transparent Mode module is normallyavailable only for a device which is located behind the router. Use the default IP address ofthe router – 192.168.1.1 (configuration can be performed only by logged in user – name andpassword is root by default).

However, it is also possible to set access to the router from the outside using selectedprotocol. In that case, communication within this protocol is not forwarded to the device behindthe router. Configuration is done using the form on NAT page of the router web interface. It isnecessary to set values for Public Port and Private Port, select protocol and enter 192.168.1.1to the Server IP address field (see figure below).

Figure 4: Access to the router from the outside

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3. RECOMMENDED LITERATURE

3. Recommended literature[1] Conel: Configuration manual for v2 routers[2] Conel: Configuration manual for v3 routers

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