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strange ddos question
| Posted by sihirlinet, 07-07-2008, 05:14 PM | | http://img230.imageshack.us/my.php?image=doomkv6.jpg
floodkoruma is a script which securing our servers from syn floods. But I couldnt understand our connection lost from server on that screen. Last screen is it.
last log messages
Jul 7 19:41:27 server filelimits: Increasing file system limits succeeded
Jul 7 19:42:25 server kernel: printk: 234 messages suppressed.
Jul 7 19:42:30 server kernel: printk: 1026977 messages suppressed.
Jul 7 19:49:42 server syslogd 1.4.1: restart.
Jul 7 19:49:42 server syslog: syslogd startup succeeded
as you can see I rebooted from apc server. But before it
Jul 7 19:42:30 server kernel: printk: 1026977 messages suppressed.
Do you have any knowledge about it ? Thank you.
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| Posted by TheITAdvisory, 07-07-2008, 05:23 PM | | This is a kernel issue. What version are you running? uname -r
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| Posted by sihirlinet, 07-07-2008, 05:34 PM | | 2.6.9-67.0.20.ELsmp
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| Posted by WorldStream, 07-08-2008, 09:37 AM | | Yes, this is a kernel issue. 2.6.9 is quite old and a standard kernel for several Linux Distro's. Try and update your kernel!
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| Posted by sihirlinet, 07-08-2008, 10:23 AM | | http://img148.yehhe.com/images/7336dddd.JPG
its new one.
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| Posted by sihirlinet, 07-08-2008, 11:03 AM | | Jul 8 15:03:36 server kernel: printk: 195127 messages suppressed.
Jul 8 15:03:41 server kernel: printk: 195461 messages suppressed.
Jul 8 15:03:46 server kernel: printk: 196644 messages suppressed.
Jul 8 15:03:51 server kernel: printk: 196851 messages suppressed.
Jul 8 15:03:56 server kernel: printk: 199560 messages suppressed.
Jul 8 15:04:01 server kernel: printk: 171665 messages suppressed.
Jul 8 15:04:06 server kernel: printk: 184212 messages suppressed.
Jul 8 15:04:11 server kernel: printk: 160231 messages suppressed.
Jul 8 15:04:16 server kernel: printk: 168367 messages suppressed.
Jul 8 15:04:21 server kernel: printk: 193563 messages suppressed.
Jul 8 15:04:26 server kernel: printk: 185255 messages suppressed.
Jul 8 15:04:31 server kernel: printk: 207514 messages suppressed.
Jul 8 15:04:36 server kernel: printk: 212488 messages suppressed.
Jul 8 15:04:41 server kernel: printk: 214217 messages suppressed.
Jul 8 15:04:46 server kernel: printk: 214151 messages suppressed.
Jul 8 15:04:51 server kernel: printk: 214588 messages suppressed.
Jul 8 15:04:56 server kernel: printk: 214568 messages suppressed.
Jul 8 15:05:01 server kernel: printk: 214163 messages suppressed.
Jul 8 15:05:06 server kernel: printk: 213733 messages suppressed.
Jul 8 15:05:11 server kernel: printk: 213517 messages suppressed.
Jul 8 15:05:16 server kernel: printk: 214543 messages suppressed.
kernel logs.
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