Good evening!
Since I installed Bitdefender Total Security 2013, I'm constantly getting issues with GameGuard.
Firstly, I wasn't being able to log into the game, so I had to add some exceptions to the firewall. These are the exceptions I made:
C:\Program Files (x86)\NCSoft\Lineage II\system\l2.bin
C:\Program Files (x86)\NCSoft\Lineage II\system\GameGuard\GameGuard.des
C:\Program Files (x86)\NCSoft\Lineage II\system\GameGuard\GameMon.des
After that, I rebooted my computer and then was able to log in the game without any problems with gameguard.
The problem is that now, after a minute of gaming, I keep getting kicked. It's another GameGuard issue:

I tried disabling antivirus and firewall, nothing seems to work. Also noticed many people has the same problem with Bitdefender.
Assuming it's a Bitdefender issue, can you guys fix it?