What do if i got backdoor?

Im created my server in garry's mod i'm
install addon and i got back door.

What does the backdoor do?
And when did u install it?

If you have a backdoor on your server you can get hacked. Do you want to get hack? if no patch any backdoor you find.

you just buy the addon and problem solved retard, not big deal

https://mtxserv.com/article/12510/how_to...rs_on_gmod

You can remove with this

Go find the code (should be always serverside) and remove it, also most leaked addons from other sites are fully backdoor so careful.