I have Rockwell software as described below. FactoryTalk View Studio SE Version 8. RSLinx_Enterprise connecting all my ControLogix devices. KepServer looking after Mitsubishi and Modbus devices. The system works well as it is. The issue is i can not get connectivity to a new modbus client. I can ping the device IP address from the serrver. I can view the web server of the client from any computer other than the server Computer containing kepserver(xxx.xxx.xxx.xxx:80). In kepserver configured modbus port 502.