Secure docking port

[Selgald]

I would like an extra option to secure a docking port, that prevents you accidently undock something. (for that times i lived to long with kerbals and i really dont know what iam doing anymore).

With a nice pressure equalization sound, i would like that.

If there is already i way to do that, you can throw stones at me, and tell me how to do that

[LexDavis]

I haven't used it at all but I think quantum struts do something like that.