My Server rcon hacked 10 times in 24 hours

[Briam]

Hi...

My server have now been hacked 10 times in 24 hours and i'm just sad. I know the steamid's of everyone in the hacker "group" and banned then ofc. But when you can hack the rcon it's pretty easy to unban yourself. I changed rcon everytime ofc.

What can i do to avoid these attacks?

info:
ULX svn (latest)
Darkrp svn (latest)

dunno if this have something to do with ulx or not but i hate the facepunch forums so

Hope you can help.   

edit: sorry i posted under wrong topic. Realised i posted little/bad information about my server. I'm too tired now so i will update it again early tommorow.

[JamminR]

Tried not running DarkRP?
Time and time again DarkRP has holes in it.
Now, I'm not guaranteeing that ULX doesn't have some exploit. It is SVN (beta!)
But, so far, four people over the past two years that have reported being exploited were running DarkRP of some sort.
Our news release from almost two years ago. = http://forums.ulyssesmod.net/index.php/topic,3183.0

Though it may seem we're RP bashers, we're not. We just know the first DarkRP gamemode was poorly coded.
It seems every single version anyone else has tried to do since based on it is as bad if not worse, since they're based on the original bad DarkRP code.

[Briam]

Hi. It's much worse than i first thought. Control Panel stopped working on my server it's acting wierd in general. Have nothing to do with ulx or darkrp though.

http://www.facepunch.com/showthread.php?t=854862

http://www.facepunch.com/showthread.php?t=854605

[tassieboy]

no doubt they are after you rcon password  i had 1 every mild attack the day after i set my server up  from what the support guy can tell they did not get the  the file with the pass in it but just to be safe the support guy moved the rcon pass from the file and place it in the command line where it should be safer.. ofc i changed every password for the server just to be safe.