[ubuntu] Need help on check different TCP port

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http://ubuntuforums.org – hai guys. I need help on checking certain tcp port on nagios. I just use this command to checking port 902. But the error appear when i try to validate. I just figure myself, but it did not work. Need guide. Thanks define service { use generic-service host_name ESX10,ESX11 service_description ISS-RealSecure check_command check_tcp -p 902 } (Hardware)