Try adding "ether host ff:ff:ff:ff:ff:ff" to the end of your NTOP command
line.  This will collect all traffic to and from a broadcast address.  This
should make it simple to looking your Stats/hosts lists for the offender.
Also, look in icmpWatch for bogus icmp packets to see if you have a CodeRed
or Nimda host on your wire.

--

J. Eric Josephson
Director of Network and System Operations
978-720-2159
mailto:[EMAIL PROTECTED]



                                                                                       
                        
                    Scott Hebert                                                       
                        
                    <scoheb@yahoo        To:     [EMAIL PROTECTED]                         
                        
                    .com>                cc:                                           
                        
                    Sent by:             Subject:     [Ntop] Determining whose sending 
Broadcast packets       
                    ntop-admin@un                                                      
                        
                    ipi.it                                                             
                        
                                                                                       
                        
                                                                                       
                        
                    10/17/2001                                                         
                        
                    11:55 AM                                                           
                        
                    Please                                                             
                        
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                    ntop                                                               
                        
                                                                                       
                        
                                                                                       
                        




Hi,

Someone on my network seems to be sending a large
amount of data to all systems on a particular segment.
In Linux, while running knetload, we all see a
constant 8000 KB/s coming in.

I believe there's probably an errant application,
broadcasting like crazy, running on a server.

What's the best way, using ntop, to determine which
machine is the culprit ?

Thanks

SH


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