Cyber Security Suite
RTU Firewall

VCL Products > Cyber Security Suite > RTU Firewall IEC -104, MODBUS

VCL-2243: RTU Firewall IEC -104, MODBUS TCP/IP

Get Data Sheet

VCL-2243 is a high-security, high-reliability, ruggedized, failsafe transparent RTU Firewall that is designed to be installed between the RTU and the SCADA server without having to reconfigure any element of the network. VCL-2243 firewall supports IEC 60870-5-104 (IEC 104), MODBUS TCP/IP protocol options with extremely advanced features that may be installed to secure and protect RTUs (Remote Terminal Units) in critical infrastructure such as Sub-Stations, Smart Grid Distribution Systems, Oil and Gas Infrastructure and Railway Signalling Networks from being compromised, attacked, or accessed by hostile elements.

Protocol Supported:

IEC 60870-5-104:
10/100BaseT ETH Port
MODBUS TCP/IP:
10/100BaseT ETH Port


UNMS (Unified Network Management System)

  • Secure (supports TLS/SSL for encrypting connections between devices)
  • Permission-based security
  • Uses Software Defined Perimeter (SDP), the username/password login are replaced with Single-Packet Authorization (SPA) and the receiving device cannot be seen by hackers. This introduces an additional layer of security and is beneficial with or without SSL/TLS.
  • Guaranteed message delivery (no data loss or duplication of data)


Valiant Communications is an ISO 9001:2015, ISO 10001:2018, ISO 14001:2015, ISO 27001:2013 and ISO 45001:2018 certified equipment manufacturer.