That's not true at all. In fact India has two-thirds of the world's great one-horned rhino population in the Kaziranga National Park.
https://en.wikipedia.org/wiki/Kaziranga_National_Park
There are armed guards protecting the rhinos and they've even shot and killed poachers, though poaching still happens due to demand from Southeast Asia.
http://www.ndtv.com/india-news/3-poachers-killed-by-forest-g...
As per the article below, Vietnam is the country that is driving the current demand for rhino horns.
http://qz.com/82302/theres-a-country-that-will-pay-300000-pe...