求助!

ykwoo

我的FreeBSD4.10的上网服务器,除了SSH,没开别的什么服务.已经稳定运行了2个多月,近日,我用dmesg查看,老是有下面这样的提示:Jul 28 02:14:01 www /kernel: Limiting icmp unreach response from 207 to 200 packets per second
Jul 28 02:14:10 www /kernel: Limiting icmp unreach response from 227 to 200 packets per second
Jul 28 02:15:56 www /kernel: Limiting icmp unreach response from 201 to 200 packets per second
Jul 28 02:45:51 www /kernel: Limiting icmp unreach response from 203 to 200 packets per second
Jul 28 02:46:24 www /kernel: Limiting icmp unreach response from 240 to 200 packets per second
Jul 28 02:46:36 www /kernel: Limiting icmp unreach response from 231 to 200 packets per second
Jul 28 03:21:34 www /kernel: Limiting icmp unreach response from 203 to 200 packets per second
Jul 28 03:21:58 www /kernel: Limiting icmp unreach response from 255 to 200 packets per second

各们大哥,帮忙看看,这是什么意思啊?是不是有人在攻击我的服务器啊?

黑夜编码人

这是有人在不停的连接你没有开放的端口，你可以将内核参数icmplim的值加大，来避免内核向你报告这个信息：

sysctl net.inet.icmp.icmplim=65535

ykwoo

谢谢楼上的大哥,改了后就没有再出现了.

kinux

小心!!!!
这可能是有人家在扫描你的服务器..

剑心通明

http://bbs.chinaunix.net/forum/viewtopic.php?t=590659&show_type=

建议楼主看看这个