Configuring Your Firewall for Dermi Atlas Professional

Overview

Dermi Atlas Professional operates on the local network. For client devices (like iPads or laptops) to connect to the host computer, the host's firewall must allow incoming connections on specific ports.

How Dermi Atlas Professional Uses the Network

Dermi Atlas Professional runs on a host computer. Client devices connect via standard web protocols (HTTP/HTTPS) over the LAN.

[Client Device] <---> [Local Network] <---> [Host Computer firewall] <---> [Dermi Atlas Professional]

If the firewall blocks these connections, client devices will be unable to load the application.

Port Configuration

Dermi Atlas Professional uses specific ports. Dermi Atlas Manager attempts to use default ports but will automatically select alternatives if conflicts occur.

• HTTP: Port 15015 - Web access (unencrypted)
• HTTPS: Port 15045 - Web access (encrypted)
• WebSocket: Port 15815 - Real-time sync
• Secure WS: Port 15845 - Secure real-time sync
• Certificate/Gateway: Port 15000 - SSL certificate download, status, and health endpoints. Dermi Atlas Manager opens this port automatically on Windows, and client devices use it to download the self-signed SSL certificate when configuring HTTPS access.

Finding the Ports: Always check Dermi Atlas Manager => Atlas Status => Atlas Access to see the actual ports in use (e.g., if 15015 was busy, it might use 15016).

Automatic vs. Manual Configuration

Automatic: On Windows, Dermi Atlas Manager adds the required inbound firewall rules automatically during installation and startup (administrator privileges are required; if the manager was not run with elevated permissions, the rules are not applied and manual configuration may be needed). On macOS and Linux, Dermi Atlas Manager does not modify the system firewall; if a firewall is active, the inbound ports must be allowed manually using the macOS or Linux guide below.

Manual: If connections from other devices fail, or if strict security software is in use, rules may need to be added manually.

See the specific guide for the relevant operating system:

• Windows Firewall Configuration
• macOS Firewall Configuration
• Linux Firewall Configuration

Network Security Considerations

• HTTP vs HTTPS: Configuring HTTPS is recommended for any network that includes Wi-Fi or shared access.
• Guest Networks: Do not attempt to use Dermi Atlas Professional over a Guest Wi-Fi network, as these typically isolate devices from one another. Ensure all devices are on the main private network.