[linux-support] Large ICMP Requests

[Rodney Thayer]

fyi.  watch out for those nasty ping packets.  Hope Rich is listening...


>Date: Thu, 14 Nov 1996 17:46:58 -0600 (CST)
>From: Tighe Kuykendall <kuykendt at campbell-emh4.army.mil>
>To: Linux-Support List <linux-support at os.com>
>Subject: Re: [linux-support] Large ICMP Requests
>Sender: owner-linux-support at solar.os.com
>
>On Thu, 14 Nov 1996, Daniel A. Taylor wrote:
>
>> Speaking of which, has anyone tried this against W95/WNT?
>> <evil laugh>
>> 
>> On Thu, 14 Nov 1996, Tighe Kuykendall wrote:
>> 
>> > Point your web browser to http://www.sophist.demon.co.uk/ping/.
>> > 
>> > I tried sending a a large ICMP request (65510) from my Slackware 3.1 
>> > machine and I got a message about the packet length being to long.  I 
>> > spun around to my NT machine and sent the same size ICMP request to my 
>> > *new* Slackware 3.1 machine and it dumped before I could get the chair 
>> > back around!  Applying the patch mentioned in the above URL might not 
>> > be a bad idea.
>
>I tried it from one NT 3.51 to another NT 3.51 (both at SP5) and 
>nothing happened.  :(
>
>I've applied the patch that is obtainable from the above URL.  It 
>patched to my 2.0.0 (only a couple of days old) kernel just fine and 
>produces a nice message with the offenders IP Addr when you're attacked.
>
>You *will* note that the Linux community produced a patch within 4 
>hours of being notified of the problem.
>
>"Live Free Or Die, Linux!"
>
>--
>-------------------------------------------------------------------
>SSG Tighe W Kuykendall  [TWK25]  kuykendt at campbell-emh4.army.mil
>Network Manager/System Admin     http://eaglecsg.army.mil/~kuykendt
>101st SG(C), Ft Campbell, KY     http://eaglecsg.army.mil
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               Rodney Thayer <rodney at sabletech.com>       +1 617 332 7292
               Sable Technology Corp, 246 Walnut St., Newton MA 02160 USA
               Fax: +1 617 332 7970           http://www.shore.net/~sable
                           Communications Software Development