Allow HTTP

From Edge 2.22, the web interface is served by default over HTTPS, and requests that arrive over plain HTTP are redirected to HTTPS. For environments where HTTPS is impractical, the Allow HTTP setting lets the device also serve the interface over HTTP. It is off by default and should only be turned on deliberately. For background on the default HTTPS behaviour, see Security Certificates.

HTTP is served alongside HTTPS, not instead of it:

• Allow HTTP off (default): requests over HTTP are redirected to HTTPS, so all traffic is encrypted.
• Allow HTTP on: requests over HTTP are served over HTTP, while HTTPS continues to work as before. Clients that connect over HTTP are simply no longer redirected.

Note

Allowing HTTP turns off transport encryption for HTTP connections. Understand the risks before enabling it.

• Everything travels in clear text — login credentials, session tokens, configuration, and data sent over HTTP can be read by anyone on the network.
• Traffic can be altered — without encryption, someone on the network can intercept and modify traffic between the browser and the device without detection.
• The device’s identity is not verified — the browser cannot confirm it is really communicating with the Edge device.
• Compliance — encryption in transit is often a regulatory or procurement requirement for industrial equipment (for example IEC 62443 or NIS2); plain HTTP may not meet it.

Only enable HTTP on fully isolated networks where these risks are acceptable, and make the decision together with your IT or security team. When in doubt, keep HTTPS and install a certificate instead — see Install a Custom HTTPS Certificate.

Note

When you switch between HTTPS and HTTP, you will need to log in again — the browser keeps its session separately for each protocol.

Enable HTTP

Via Settings

1. Open the Edge web interface and log in.

2. Go to Settings → Network Adapter and locate the Allow HTTP setting.

   

3. Turn on Allow HTTP. A security warning appears — read it and confirm that you accept the risks. The setting is applied immediately; there is no separate save step.

4. A Reload WebUI via HTTP button appears. Click it to switch your current browser session to HTTP, or simply change https:// to http:// in the address bar yourself.

Via Setup Wizard (during initial setup)

1. Start the Setup Wizard for the Edge device.

2. In the Network Adapter step, turn on Allow HTTP and confirm the security warning.

3. Continue and complete the wizard.

Switch back to HTTPS only

To return to HTTPS-only access, turn Allow HTTP off again in the same place. HTTP requests are then redirected to HTTPS as before.

To get a clean HTTPS connection with no certificate warning, install a certificate your computers trust — see Install a Custom HTTPS Certificate.