i would like to suggest an option to reboot server from inside ispconfig it would be handy to have some time you are not able to use ssh when outside home and all it need are a simpel reboot as the solution as i recall Cpanel have this option
Either that or ssh inside ISPConfig panel. I believe @Th0m is working on the later. If not to be integrated, you can already implement the later yourself via various self taught resources available online.
Integration of such a feature should be quite easy; I can set it on my ToDo list if there is demand for such an option. I guess we should add it to security settings though as not everyone will like it that a web-based GUI is able to reboot the server.