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Date:      Mon, 28 Aug 2000 13:31:06 -0400
From:      "Shane Hale" <shale@bricsnet.com>
To:        <freebsd-security@freebsd.org>
Message-ID:  <CCEDJBBFHBFABONEPKICOECHCDAA.shale@bricsnet.com>

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Hello

I have a machine that's getting attacked regularly.

(Yes i know my clock is wrong... 1886809 seconds fast to be exact)

Sep 19 00:17:54 shell /kernel: icmp-response bandwidth limit 3491/200 pps
Sep 19 00:17:55 shell /kernel: icmp-response bandwidth limit 3499/200 pps
Sep 19 00:17:56 shell /kernel: icmp-response bandwidth limit 3505/200 pps
Sep 19 00:17:57 shell /kernel: icmp-response bandwidth limit 3503/200 pps
Sep 19 00:17:58 shell /kernel: icmp-response bandwidth limit 3505/200 pps
Sep 19 00:17:59 shell /kernel: icmp-response bandwidth limit 3502/200 pps
Sep 19 00:18:00 shell /kernel: icmp-response bandwidth limit 3488/200 pps
Sep 19 00:18:01 shell /kernel: icmp-response bandwidth limit 3491/200 pps
Sep 19 00:18:02 shell /kernel: icmp-response bandwidth limit 3494/200 pps
Sep 19 00:18:03 shell /kernel: icmp-response bandwidth limit 3491/200 pps
Sep 19 00:18:04 shell /kernel: icmp-response bandwidth limit 3497/200 pps
Sep 19 00:18:05 shell /kernel: icmp-response bandwidth limit 3501/200 pps
Sep 19 00:18:06 shell /kernel: icmp-response bandwidth limit 3504/200 pps
Sep 19 00:18:07 shell /kernel: icmp-response bandwidth limit 3485/200 pps
Sep 19 00:18:27 shell /kernel: icmp-response bandwidth limit 1599/200 pps

(This went on for about 15 minutes, and caused my network to be slow as
molasses and a traceroute from home stopped at the router that routes my
C-Class)

I have ICMP bandwith limiting on the machine being attacked, but...

- how can i trace who's attacking me
- what exactly are they trying to do
- how does ICMP_BANDWITH Limiting work

If there is anyone who can help me, i'd appreciate it.


Shane Hale
Systems Administration
Bricsnet, Inc
Suite 601, 2300 Yonge Street, Box 2361 / Toronto, Ontario / M4P 1E4 / Canada
Phone: +1(416)489-9000 ext. 304 Fax: +1(416)489-3201
Email: shale@bricsnet.com Web: http://www.bricsnet.com

__________________________________________
Bricsnet Inc.
Bricsnet.com is the leading e-marketplace for the global building industry


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