In the past week of playing garrysmod, there have been at least five people who got banned or kicked for griefing and their response is DDoSing the server, making it unplayable even ever after they have disconnected. I would make this myself if I had any knowledge of source, but I don’t, so I would be really grateful if this was made and given to garry to add to the game, or even better, given to valve to stop the problem for all source games. I’ve already sent valve a request for their stance on DDoS and I’ll post it when I get a response.
I don’t really know the technical details behind DDoS so I understand if it may not be possible to defend against, but to anyone who does have an idea and makes it, everyone will be very grateful.
Perhaps this will help with finding solutions.