# Modbus / S7comm Industrial Control Network Hosts File
# Maps IP addresses to meaningful ICS node names
#
# Network: 141.81.0.x - Industrial control system
#
# SCADA Controller / HMI (141.81.0.10)
# - Central controller initiating Modbus writes and S7 read/write
#   operations to multiple PLCs and remote I/O modules
# - Also hosts HTTP (80), RPC (135), NetBIOS (139) services
#
# Modbus TCP Servers (port 502)
# - Field devices responding to Modbus function codes
#
# Siemens S7comm Devices (port 102 / ISO-TSAP)
# - Siemens PLCs communicating via S7 protocol over COTP
#
# Engineering / Supervisory Stations
# - Workstations communicating via RPC, HTTP, EtherNet/IP, and OPC

# SCADA Controller / HMI
141.81.0.10   🏭 SCADA-HMI

# Modbus TCP Servers (port 502)
141.81.0.24   🖥 Modbus-Server-1
141.81.0.26   🖥 Modbus-Server-2
141.81.0.44   🖥 Modbus-Server-3
141.81.0.46   🖥 Modbus-Server-4
141.81.0.64   🖥 Modbus-Server-5
141.81.0.66   🖥 Modbus-Server-6
141.81.0.84   🖥 Modbus-Server-7
141.81.0.86   🖥 Modbus-Server-8
141.81.0.104  🖥 Modbus-Server-9
141.81.0.143  🖥 Modbus-Server-10
141.81.0.144  🖥 Modbus-Server-11
141.81.0.163  🖥 Modbus-Server-12
141.81.0.164  🖥 Modbus-Server-13

# Siemens S7 PLCs (port 102 / ISO-TSAP)
141.81.0.14   🏭 S7-PLC-1
141.81.0.31   🏭 S7-PLC-2
141.81.0.51   🏭 S7-PLC-3
141.81.0.71   🏭 S7-PLC-4
141.81.0.91   🏭 S7-PLC-5
141.81.0.111  🏭 S7-PLC-6
141.81.0.130  🏭 S7-PLC-7
141.81.0.146  🏭 S7-PLC-8
141.81.0.151  🏭 S7-PLC-9
141.81.0.166  🏭 S7-PLC-10
141.81.0.236  🏭 S7-PLC-11
141.81.0.237  🏭 S7-PLC-12

# Engineering / Supervisory Workstations
141.81.0.11   📱 Eng-Workstation-1
141.81.0.181  📱 Eng-Workstation-2
141.81.0.182  📱 Eng-Workstation-3
141.81.0.183  📱 Eng-Workstation-4
141.81.0.184  📱 Eng-Workstation-5
141.81.0.187  📱 Eng-Workstation-6
141.81.0.188  📱 Eng-Workstation-7

# Other Field Devices
141.81.0.23   🏭 Field-Device-1
141.81.0.43   🏭 Field-Device-2
141.81.0.63   🏭 Field-Device-3
141.81.0.83   🏭 Field-Device-4
