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unexpectedly shrunk window

https://www.rootforum.org/forum/viewtopic.php?t=51677

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unexpectedly shrunk window

Posted: 2011-02-16 14:14
by TheKing
hallo leute,

ich habe hier ein Problem, ich habe gerade die Syslog geöffnet weil die eine etwas zu groß war und hab folgendes gefunden...

Code: Select all

Feb 15 20:39:01 zulu339 kernel: [19986.145522] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959217518:3959221874 (repaired)
Feb 15 20:39:03 zulu339 kernel: [19988.125524] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959265434:3959269790 (repaired)
Feb 15 20:39:05 zulu339 kernel: [19990.325522] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959271810:3959274146 (repaired)
Feb 15 20:39:11 zulu339 kernel: [19996.369524] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959397566:3959403374 (repaired)
Feb 15 20:39:13 zulu339 kernel: [19998.249024] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959446934:3959452742 (repaired)
Feb 15 20:39:14 zulu339 kernel: [19998.841023] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959446934:3959452742 (repaired)
Feb 15 20:39:15 zulu339 kernel: [20000.025025] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959446934:3959452742 (repaired)
Feb 15 20:39:19 zulu339 kernel: [20004.117022] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959518082:3959520986 (repaired)
Feb 15 20:39:20 zulu339 kernel: [20004.701012] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959518082:3959520986 (repaired)
Feb 15 20:39:22 zulu339 kernel: [20007.433024] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959573258:3959576162 (repaired)
Feb 15 20:39:23 zulu339 kernel: [20008.025022] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959573258:3959576162 (repaired)
Feb 15 20:39:26 zulu339 kernel: [20010.845523] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959632790:3959635694 (repaired)
Feb 15 20:39:26 zulu339 kernel: [20011.437524] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959632790:3959635694 (repaired)
Feb 15 20:39:28 zulu339 kernel: [20012.621524] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959632790:3959635694 (repaired)
Feb 15 20:39:31 zulu339 kernel: [20016.505024] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959699582:3959705390 (repaired)
Feb 15 20:39:32 zulu339 kernel: [20017.113011] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959699582:3959705390 (repaired)
Feb 15 20:39:33 zulu339 kernel: [20018.560023] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959750402:3959756210 (repaired)
Feb 15 20:39:34 zulu339 kernel: [20019.156013] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959750402:3959756210 (repaired)
Feb 15 20:39:37 zulu339 kernel: [20021.709525] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959796866:3959802674 (repaired)
Feb 15 20:39:37 zulu339 kernel: [20022.317522] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959796866:3959802674 (repaired)
Feb 15 20:39:40 zulu339 kernel: [20024.913022] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959847686:3959849138 (repaired)
Feb 15 20:39:42 zulu339 kernel: [20027.489525] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959907218:3959913026 (repaired)
Feb 15 20:39:43 zulu339 kernel: [20028.097523] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959907218:3959913026 (repaired)
Feb 15 20:39:44 zulu339 kernel: [20029.312592] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3959907218:3959913026 (repaired)
Feb 15 20:39:50 zulu339 kernel: [20035.041523] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960016118:3960020474 (repaired)
Feb 15 20:39:52 zulu339 kernel: [20036.645523] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960034994:3960037898 (repaired)
Feb 15 20:39:52 zulu339 kernel: [20037.269522] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960034994:3960037898 (repaired)
Feb 15 20:39:55 zulu339 kernel: [20040.273524] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960088718:3960091622 (repaired)
Feb 15 20:39:56 zulu339 kernel: [20040.905523] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960088718:3960091622 (repaired)
Feb 15 20:39:59 zulu339 kernel: [20043.700513] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960123566:3960127922 (repaired)
Feb 15 20:40:00 zulu339 kernel: [20045.461014] TCP: Peer 77.176.211.157:49234/9000 unexpectedly shrunk window 3960183098:3960187454 (repaired)
so diese zeilen kommen in der Logfile mehrfach vor aber nur mit 2 verschiedenen IPs

war dies eine Attacke auf den Server? oder wie soll ich das interpretieren...

steh gerade voll im wald :(

Re: unexpectedly shrunk window

Posted: 2011-02-16 15:47
by TheKing
wo muss ich dies denn ändern also dieses Log von info auf warn?

Re: unexpectedly shrunk window

Posted: 2011-02-16 18:45
by TheKing
okey habs hinbekommen, die zeilen wurden von Fail2Ban geschrieben...

vielen dank dazu erstmal
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