[jira] [Commented] (IGNITE-16741) DoS attacks on ignite ports

["Aleksandr Polovtcev (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-16741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17521582#comment-17521582 ] 

Aleksandr Polovtcev commented on IGNITE-16741:
----------------------------------------------

[~bdq], thank you for reporting this issue. However, I was not able to reproduce this error with the aforementioned script. Can you please provide a little more information, like the full script code and your Ignite configuration? 

> DoS attacks on ignite ports
> ---------------------------
>
>                 Key: IGNITE-16741
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16741
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.11.1
>            Reporter: biandeqiang
>            Assignee: Aleksandr Polovtcev
>            Priority: Critical
>              Labels: ise
>
> DoS attacks on ignite's TcpCommunicationSpi and TcpDiscoverySpi's ports
> The ignite I use is embedded,ignite uses two ports, When I was testing a dos attack on the port, ignite had java.lang.OutOfMemoryError: Direct buffer memory.
> TcpDiscoverySpi spi = new TcpDiscoverySpi();
> spi.setLocalPort("port")
> TcpCommunicationSpi ipCom = new TcpCommunicationSpi();
> ipCom.setLocalPort("port")
>  
> {{[2021-12-01 14:12:59,056][WARN ][0][0][grid-nio-worker-tcp-comm-4-#43%TcpCommunicationSpi%][ROOT][IgniteLoggerImp][88] Caught unhandled exception in NIO worker thread (restart the node). java.lang.OutOfMemoryError: Direct buffer memory
> at java.nio.Bits.reserveMemory(Bits.java:695)
> at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
> at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
> at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.register(GridNioServer.java:2672)
> at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2089)
> at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1910)
> at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
> at java.lang.Thread.run(Thread.java:748)}}
>  
> I hope Ignite can also add MaxConnect as Tomcat and set a counter. If the counter exceeds the value, wait for several seconds.{{{}{}}}



--
This message was sent by Atlassian Jira
(v8.20.1#820001)