Network Interfaces

Network Interfaces

A detailed description of creating and configuring each type of network interface is described in the following instructions:

All created interfaces are presented in the form of a table:
1. Network Interfaces.png

In the edit mode, it becomes possible to change the name, network card (by clicking the pencil button), and configuration settings (manually or automatically):
2. Network Interfaces.png

If the Network card is already in use by any interface, then UTM will display an error window "NIC/VLAN tag combinations must be unique".

When migrating UTM from one physical machine to another (disk transfer or backup restore on new hardware), the settings of all network interfaces specified before the migration will be restored. Use the trash bin button to remove unnecessary interfaces.
Example: the original version of UTM 13.X -> migrated UTM to new hardware -> configured new hardware -> upgraded -> in the Network interfaces section, old (before migration) and new (after migration and configuration) network interfaces will be displayed.

Configuring Local Ethernet

Manual and automatic configuration using the DHCP protocol.

Be careful!
If you select Local Ethernet and set it as External Ethernet, you will not be able to access the Internet.

Manual Configuration

To configure the connection in the web interface, follow these steps:

1. Go to the menu Services -> Network Interfaces.
2. Click on the icon (+) in the upper right corner of the window and select Local Ethernet.1. Configuring Local Ethernet.png

3. Select a network card.
4. Fill in the fields listed below:

The Gateway field in the Local interface is set only if:
- There is no External UTM interface;
- UTM is only used as a proxy.

Configuration example:
2. Configuring Local Ethernet.png

Automatic Configuration

It is used if your Internet provider supports the ability to automatically configure the Ethernet interface using the DHCP protocol.

  1. Go to menu Services -> Network interfaces.
  2. Click on the icon (+) in the upper right corner of the window and select Local Ethernet.
  3. Select a network card.
  4. Fill in the Title field. The VLAN tag field is filled in only if the network card is already in use.
  5. Enable Automatic configuration via DHCP.
  6. Make sure that the entered values are correct and click Save.
Configuration example:
3. Configuring Local Ethernet.png

Configuring External Ethernet

Manual and automatic configuration using the DHCP protocol.

Usually, all necessary information for configuration is contained in the contract with your Internet provider.

Manual Configuration

To configure the connection in the web interface, follow these steps:

1. Go to the menu Services -> Network Interfaces.
2. Click on the icon (+) in the upper right corner of the window and select External Ethernet.1. Configuring External Ethernet.png

3. Select a network card.
4. Fill in the fields listed below:

Configuration example:
2. Configuring External Ethernet.png

Automatic Configuration

It is used if your Internet provider supports the ability to automatically configure the Ethernet interface using the DHCP protocol.

  1. Go to menu Services -> Network interfaces.
  2. Click on the icon (+) in the upper right corner of the window and select External Ethernet.
  3. Select a network card.
  4. Fill in the Title field. The VLAN tag field is filled in only if the network card is already in use.
  5. Enable Automatic configuration via DHCP.
  6. Make sure that the entered values are correct and click Save.
Configuration example:
3. Configuring External Ethernet.png

Configuring PPTP Connection

Connection via PPTP protocol is used by Internet service providers in order to provide a more reliable authorization.

To configure such a connection in the web interface, follow these steps:

1. Go to the menu Services -> Network Interfaces.
2. Click on the icon (+) in the upper right corner of the window and select Ethernet + PPTP.
3. Select a network card.
4. Fill in the fields listed in the table below:

Parameter

Description

Title

The name you will use to identify the interface in the future. Maximum 42 characters.

Network card

The network adapter will be used to connect to the Internet provider.

VLAN tag

The VLAN ID in which UTM will be present. Such network interface is considered a VLAN interface. Fill only in the case a network card is already in use.

Automatic configuration via DHCP

Used if your Internet provider supports the ability to automatically configure the Ethernet interface using the DHCP protocol.

IP address/mask

You can assign multiple IP addresses to the interface. At least one IP address must be specified.

Gateway

Gateway IP address.

DNS

There are two fields available to specify the DNS server. Optional fields.

VPN Server

IP address or domain name of the PPTP server.

Login

Username for the PPTP connection.

Password

Password for the PPTP connection.

5. Make sure the entered values are correct and click Save.

Configuration example:
1. Configuring PPTP Connection.png

Configuring L2TP Connection

Connection via L2TP protocol is sometimes used by Internet service providers in order to provide more reliable authorization.

To configure such a connection in the web interface, follow these steps:

  1. Go to menu Services -> Network Interfaces.
  2. Click on the icon (+) in the upper right corner of the window and select Ethernet + L2TP.
  3. Select a network card.
  4. Fill in the fields listed in the table below:

Parameter

Description

Title

The name you will use to identify the interface in the future. Maximum 42 characters.

Network Card

The network adapter will be used to connect to the Internet provider.

VLAN tag

The VLAN ID in which UTM will be present Such network interface is considered a VLAN interface. Fill in only if the network card is already in use.

Automatic configuration via DHCP

Used if your Internet provider supports the ability to automatically configure the Ethernet interface using the DHCP protocol.

IP address/mask

You can assign multiple IP addresses to the interface. At least one IP address must be specified.

Gateway

Gateway IP address.

DNS

Two fields are available to specify the DNS server (optional).

VPN Server

IP address or domain name of the L2TP server.

Username

User name for the L2TP connection.

Password

Password for the L2TP connection.
  1. Make sure that the entered values are correct and click Save.
Configuration example:
1. Configuring L2TP Connection.png

Configuring PPPoE Connection

Connection via PPPoE protocol is traditionally used by providers offering connection via xDSL.

To configure the connection in the web interface, follow these steps:

  1. Go to menu Services -> Network Interfaces.
  2. Click on the icon (+) in the upper right corner of the window and select Ethernet + PPPoE.
  3. Select a network card.
  4. Fill in the fields listed in the table below:

Parameter

Description

Title

The name you will use to identify the interface in the future. Maximum 42 characters.

Network card

The network adapter will be used to connect to the Internet provider.

VLAN tag

The VLAN ID in which UTM will be present Such network interface is considered a VLAN interface. Fill in only if the network card is already in use.

Login

Username for PPPoE connection.

Password

Password for PPPoE connection.

Service

Service ID. If you don't know what to enter, leave the field empty.

Access concentrator (Hub)

Hub ID. If you don't know what to enter, leave the field empty.
  1. Make sure the entered values are correct and click Save.
Configuration example:
1. Configuring PPPoE Connection.png

Connection via 3G and 4G

To connect to the networks of mobile operators, it is possible to use 4G routers with Ethernet interfaces.

The server also supports some models of USB modems, for example, Huawei E8372. When connected, the USB modem will be displayed in SafeUTM as a new Ethernet interface.