Https Connections; External Network Security Considerations - Honeywell VC4 User Manual

6.11.5 HTTPS Connections

When making a connection to the VC4™ HMI PC via HTTPS, it will be necessary to accept the
certificate. A message like the one using Google Chrome will be shown:
Tap on the Advanced button, and select "Proceed to <some IP> (unsafe)."

6.11.6 External Network Security Considerations

The VC4™ HMI PC is intended ONLY for connection to a private network – no connections from
the internet should be allowed. All services not explicitly named above are disabled and filtered
via the iptables rules. Access control is via users and roles defined in the security configuration.
By default, anyone can view system state information, but elevated permissions are required for
any configuration, control, or maintenance.
Note: Router with IPSec or Peer-to-Peer (P2P) Network is recommended to enhance security on
Modbus TCP/IP communication.
VC4™ 130 User Manual