As said before.
It is not a ilegitimate action.
I will explain it better for those who think I want to damage something.
Billing system from my isp company can not implement api integration with an new service router we recently bought.
Billing system vendor is out of business, I can not request to deploy api integration and can not modified it.
Both assests belongs to my , are inside my company , installed next each other on same datacenter.
Intercepting its commands is just a workaround I came up to solve my integration problem.
Regards.
Leandro