Dear Stephen,
Although I don't use DNN, I'm very surprised at your statement without further explanation. Many web-developers use one or more sites to "test" beta software before using them on their production sites. To ensure that the tests will work they use the same remote server as for the production site,e xcept for a different domain.
Restricting installation of beta versions sounds alarming and big-brotherish, but also seems to signal that your servers are not safe, which is really worrying.
Although I don't use DNN, I'm very surprised at your statement without further explanation. Many web-developers use one or more sites to "test" beta software before using them on their production sites. To ensure that the tests will work they use the same remote server as for the production site,e xcept for a different domain.
Restricting installation of beta versions sounds alarming and big-brotherish, but also seems to signal that your servers are not safe, which is really worrying.