sorry for the late reply. port scanners can easily determine your flaws. you can mirror your server (that means you have to pay a lot of $$$), or purchase hardware. But since this issues of exploits, it will continue to divulge in several ways. All of us knows how the SQL works... We know how Zones and HTLauncher connect with each other... We know well how SQLDAEMON.EXE and CHATSRV.EXE get our data from client... and we certainly know how packets are transmitted even though we alter the time stamps. This are the main exploits every tantra server is facing.
Disabling Ashramboards and Msgboards might lessen the damage. The server is prone to attack that most previous exploiters are still happily doing... because the files especially K4 (no 3-skillbar) has lack of protection from exploits... However, K5 has been addressed most of the exploits before it was discontinued.
MY experience, the server was attacked thru several ways... typing % /n /% on message boards, ashram boards or even simply on private message... the very dangerous one are trainers made in c++ that can directly connect like HTLauncher function and shuts down your server... the others are just resetting your server and duping items... some are HTLauncher based re-engineering... and several others to mention that totally stuck your server.
KyleMarvin give up his server online due to this exploits. but with his permission, only selected can connect thru online. I do the same. Less people, the more you know them... less connection., less exploits... You will also find who your real friends are.
I also re-engineered everything, because of several glitches that spawned... and resolve most of it. Friends are helping me by reporting glitches, so we all enjoy playing.