Configure the LAN DHCP server

4 Nov 2026
Knowledge

Description

The edge gateway has it's own DHCP server that automatically assigns an IP address, and other necessary network parameters, to clients connected to the edge gateway's LAN ports if they do not have a static IP address configured.

Configure the DHCP server
Configure address reservations

Configure the DHCP server

The DHCP server is enabled by default, but can be disabled if necessary. It also automatically changes along with other changes you make. If you change the IP range of the edge gateway's LAN IP address, then the IP range of the DHCP server will automatically change as well.

Select one of the configuration methods below.

IXON Cloud
Local web interface

IXON Cloud

The steps below explain how to configure the DHCP server via the IXON Cloud.

Go to Fleet Manager > Devices and click on your device name.
Go to Network > LAN.
Enable DHCP server and enter a DHCP range. For example from 192.168.140.200 to 192.168.140.250.
- Any connected device that does not have a static IP address configured, will request an IP address and automatically be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range. Either change their IP addresses or change the DHCP range to resolve the overlap. This prevents having potential duplicate IP addresses in the future.

You have now made the changes in the IXON Cloud, but these are not yet active in your device. You will need to push your changes to your device for them to take effect.

Temporary disconnect

After this next step, the config push, the device may temporarily disconnect and LAN communication may be temporarily interrupted while it's applying the new settings. This only takes a moment.

Click on Push config to device in the top right corner.

Local web interface

Supported hardware

SecureEdge and SecureEdge Pro, firmware 5.9 and up (upgrade)
IXrouter3, firmware 3.19 and up (upgrade)

To configure the DHCP server via the local web interface, select your edge gateway model:

SecureEdge and SecureEdge Pro

Connect your computer to one of the LAN ports.
- The local web interface is not accessible from the WAN side (Cloud port and also OT/LAN port when it's configured as WAN2).
Open a new browser tab, go to the edge gateway's LAN IP address, and log in.
- The default LAN IP address is 192.168.140.1.
- Make sure that your laptop has an IP address in the same range. You may need to configure this manually. There are many online guides on this if you need a step by step guide.
- The default username is admin.
- The default password (PW) is printed on the side of the edge gateway.
- The number of login attempts is limited per time window, in compliance with cybersecurity standard IEC 62443-4-2. By default, the number of login attempts is limited to 5 per 1 minute, replenishing a login attempt every 1 minute. We recommend you configure this to align with your corporate security policy. Do so by logging in and going to Administration > Authentication.
- You can change the password by logging in and going to Administration > Change password.
Go to Network > LAN.
At DHCP server, enable Assign IP address automatically and enter a DHCP range. For example from 192.168.140.200 to 192.168.140.250.
- Any connected device that does not have a static IP address configured, will request an IP address and automatically be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range. Either change their IP addresses or change the DHCP range to resolve the overlap. This prevents having potential duplicate IP addresses in the future.
Click on Submit changes.

You have now made the changes in the edge gateway, but these are not yet present in the IXON Cloud. You will need to import these changes to the IXON Cloud to avoid unwanted configuration changes later on.

Wait a moment for the edge gateway to report its new configuration to the IXON Cloud. This usually takes less than a minute.
Go to Fleet Manager > Devices and click on your device name.
Open the sync optionsand select Import config from device.

IXrouter3

Connect your computer to one of the LAN ports.
- The local web interface is not accessible from the WAN side (Internet port).
Open a new browser tab and go to the edge gateway's LAN IP address.
- The default LAN IP address is 192.168.27.1.
- Make sure that your laptop has an IP address in the same range. You may need to configure this manually. There are many online guides on this if you need a step by step guide.
Go to Configuration and log in.
- The default password (PW) is printed on the side of the edge gateway.
- If there is no password printed on the side, this edge gateway was manufactured before the local web interface was created. That means it does not have a password and you cannot proceed using this method. Instead, use the IXON Cloud method. Additionally, once the edge gateway is online and has a VPN connection, we can configure a password for you. Please then contact us by granting us support access at Fleet Manager > Tools and tell us the serial number of the edge gateway.
- If you enter an incorrect password multiple times in a row, you'll need to wait roughly 5 minutes before you can try again. The number of attempts is limited to 5 attempts per 5 minutes.
- You can change the password by logging in and going to Account in the bottom left corner.
Go to Network > LAN > DHCP,
Enable DHCP server and enter a DHCP range. For example from 192.168.140.200 to 192.168.140.250.
- Any connected device that does not have a static IP address configured, will request an IP address and automatically be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range. Either change their IP addresses or change the DHCP range to resolve the overlap. This prevents having potential duplicate IP addresses in the future.
If you haven't already, Apply your settings.

Wait a moment for the edge gateway to report its new configuration to the IXON Cloud. This usually takes less than a minute.
Go to Fleet Manager > Devices and click on your device name.
Open the sync optionsand select Import config from device.

Configure address reservations

Supported hardware

SecureEdge and SecureEdge Pro, firmware 5.8 and up (upgrade)
IXrouter3, firmware 3.10 and up (upgrade)

Generally, you configure your machine with a static IP address to ensure that you can always access that machine at a specific IP address. Saving you time that you would otherwise have to spend searching for the IP address or trying out different addresses. Especially valuable in time-sensitive situations.

In situations where your machines are set to automatically request an IP address you are never sure about their IP address, as it can be different the next day. Whenever such a machine requests an IP address, it receives a lease for a random IP address. When you add an address reservation to the DHCP server, that machine will always receive a lease for the same IP address, ensuring that you can always access that machine at a specific IP address.

Select one of the configuration methods below.

IXON Cloud
Local web interface

IXON Cloud

The steps below explain how to configure address reservations via the IXON Cloud.

Go to Fleet Manager > Devices and click on your device name.
Go to Network > LAN.
Make sure that DHCP server is enabled and a DHCP range is configured. For example from 192.168.140.200 to 192.168.140.250.
Click on Add address reservation.
Enter the connected device's MAC address and a preferred IP address.
- Make sure that the IP address you enter is outside of the DHCP server's range.
- Any connected device that does not have a static IP address configured, will request an IP address and if their MAC address is in an address reservation, they'll be assigned the matching IP address. Otherwise they'll be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range and address reservations. Either change their IP addresses or change the DHCP range or address reservation to resolve the overlap. This prevents having potential duplicate IP addresses in the future.
Click on Add.
Make sure to reboot any already connected devices for which you created an address reservation.
- A restart is needed to receive the new IP address from the address reservation.

You have now made the changes in the IXON Cloud, but these are not yet active in your device. You will need to push your changes to your device for them to take effect.

Temporary disconnect

After this next step, the config push, the device may temporarily disconnect and LAN communication may be temporarily interrupted while it's applying the new settings. This only takes a moment.

Click on Push config to device in the top right corner.

Local web interface

Supported hardware

SecureEdge and SecureEdge Pro, firmware 5.9 and up (upgrade)
IXrouter3, firmware 3.19 and up (upgrade)

To configure address reservations via the local web interface, select your edge gateway model:

SecureEdge and SecureEdge Pro

Connect your computer to one of the LAN ports.
- The local web interface is not accessible from the WAN side (Cloud port and also OT/LAN port when it's configured as WAN2).
Open a new browser tab, go to the edge gateway's LAN IP address, and log in.
- The default LAN IP address is 192.168.140.1.
- Make sure that your laptop has an IP address in the same range. You may need to configure this manually. There are many online guides on this if you need a step by step guide.
- The default username is admin.
- The default password (PW) is printed on the side of the edge gateway.
- The number of login attempts is limited per time window, in compliance with cybersecurity standard IEC 62443-4-2. By default, the number of login attempts is limited to 5 per 1 minute, replenishing a login attempt every 1 minute. We recommend you configure this to align with your corporate security policy. Do so by logging in and going to Administration > Authentication.
- You can change the password by logging in and going to Administration > Change password.
Go to Network > LAN.
At DHCP server, make sure that Assign IP addresses automatically is enabled and a DHCP range is configured. For example from 192.168.140.200 to 192.168.140.250.
At Address reservations, add a reservation.
Enter the connected device's MAC address and a preferred IP address.
- Make sure that the IP address you enter is outside of the DHCP server's range.
- Any connected device that does not have a static IP address configured, will request an IP address and if their MAC address is in an address reservation, they'll be assigned the matching IP address. Otherwise they'll be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range and address reservations. Either change their IP addresses or change the DHCP range or address reservation to resolve the overlap. This prevents having potential duplicate IP addresses in the future.
Click on Submit changes.
Make sure to reboot any already connected devices for which you created an address reservation.
- A restart is needed to receive the new IP address from the address reservation.

Wait a moment for the edge gateway to report its new configuration to the IXON Cloud. This usually takes less than a minute.
Go to Fleet Manager > Devices and click on your device name.
Open the sync optionsand select Import config from device.

IXrouter3

Connect your computer to one of the LAN ports.
- The local web interface is not accessible from the WAN side (Internet port).
Open a new browser tab and go to the edge gateway's LAN IP address.
- The default LAN IP address is 192.168.27.1.
- Make sure that your laptop has an IP address in the same range. You may need to configure this manually. There are many online guides on this if you need a step by step guide.
Go to Configuration and log in.
- The default password (PW) is printed on the side of the edge gateway.
- If there is no password printed on the side, this edge gateway was manufactured before the local web interface was created. That means it does not have a password and you cannot proceed using this method. Instead, use the IXON Cloud method. Additionally, once the edge gateway is online and has a VPN connection, we can configure a password for you. Please then contact us by granting us support access at Fleet Manager > Tools and tell us the serial number of the edge gateway.
- If you enter an incorrect password multiple times in a row, you'll need to wait roughly 5 minutes before you can try again. The number of attempts is limited to 5 attempts per 5 minutes.
- You can change the password by logging in and going to Account in the bottom left corner.
Go to Network > LAN > DHCP.
Make sure that DHCP is enabled and a DHCP range is configured. For example from 192.168.140.200 to 192.168.140.250.
At Static IP Leases, add a static IP lease.
Enter the connected device's MAC address and a preferred IP address.
- Make sure that the IP address you enter is outside of the DHCP server's range.
- Any connected device that does not have a static IP address configured, will request an IP address and if their MAC address is in an address reservation, they'll be assigned the matching IP address. Otherwise they'll be assigned one from the DHCP range.
- Make sure that any connected devices with a static IP address do not overlap with the DHCP range and address reservations. Either change their IP addresses or change the DHCP range or address reservation to resolve the overlap. This prevents having potential duplicate IP addresses in the future.
If you haven't already, Apply your settings.
Make sure to reboot any already connected devices for which you created an address reservation.
- A restart is needed to receive the new IP address from the address reservation.

Wait a moment for the edge gateway to report its new configuration to the IXON Cloud. This usually takes less than a minute.
Go to Fleet Manager > Devices and click on your device name.
Open the sync optionsand select Import config from device.

Title

Configure the LAN DHCP server

URL Name

Configure-the-LAN-DHCP-server

Configure the LAN DHCP server

Configure the DHCP server

IXON Cloud

Local web interface

Configure address reservations

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Configure the LAN DHCP server

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Configure the DHCP server

IXON Cloud

Local web interface

Configure address reservations

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Local web interface

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