Сервер атакуют

[MAZDIK]

Client: [IP: 172.27.13.103] -> Protocol Revision: 84284522 is invalid. Minimum is 83 and Maximum is 87 are supported. Closing connection.
Wrong Protocol Version 84284522
Client: [IP: 172.27.13.103] - Failed reading: [C] 08 AuthLogin - L2J Server Version: ${l2j.revision} - DP Revision: ${l2jdp.revision}
java.nio.BufferUnderflowException
	at java.nio.Buffer.nextGetIndex(Buffer.java:480)
	at java.nio.HeapByteBuffer.getChar(HeapByteBuffer.java:234)
	at org.mmocore.network.ReceivablePacket.readS(ReceivablePacket.java:77)
	at net.sf.l2j.gameserver.network.clientpackets.AuthLogin.readImpl(AuthLogin.java:51)
	at net.sf.l2j.gameserver.network.clientpackets.L2GameClientPacket.read(L2GameClientPacket.java:41)
	at org.mmocore.network.SelectorThread.parseClientPacket(SelectorThread.java:486)
	at org.mmocore.network.SelectorThread.tryReadPacket(SelectorThread.java:416)
	at org.mmocore.network.SelectorThread.readPacket(SelectorThread.java:329)
	at org.mmocore.network.SelectorThread.run(SelectorThread.java:195)

После атаки сервер падает. Как можно фильтровать пакеты на FreeBSD ?

[Nytrex]

Никогда даже не видел ОС семейства *nix, но насколько я знаю Вам может помочь утилита iptables