Sigma Data Transfer Between Clients and Server

[Product_Support]

Issue

Clarification is needed on how data is transferred between Sigma Clients (Remote and Web) and the Sigma Server, including ports used and encryption methods.

Product Line

Satchwell BAS & Sigma

Environment

Satchwell Sigma

Cause

Sigma uses proprietary communication methods between clients and the server. Understanding the ports and encryption mechanisms is essential for secure deployment, firewall configuration, and troubleshooting.

Resolution

Data transfer between Sigma Clients and the Sigma Server involves the following:

1. Communication Ports

   • TCP Port 3614: Used for general data transfer (e.g., index files, point files, logs, alarms).
   • HTTP Port 8080:
     • Used for web-based communication.
     • Also handles keep-alive messages from clients.
     • This port is configurable via SetupSvr located in C:\Sigma\Bin.

2. Encryption Details

   • Passwords:
     • Encrypted during transmission.
     • Transferred via TCP using ports 8080 and 3614.
   • Usernames:
     • Not encrypted during transmission.

3. Data Security

   • While data is not encrypted end-to-end, Sigma uses a proprietary method for data handling.
   • For enhanced security, consider network-level protections (e.g., VPN, firewall rules).

4. Additional Reference

   • See related article: Sigma Username and Password Encryption for deeper insight into credential handling.