[Gllug] Detecting attempts to contact another machine and acting on them

[salsaman]

John Winters wrote:

> Richard Jones wrote:
>
>> On Mon, Mar 12, 2007 at 02:04:02PM -0000, John Winters wrote:
>>
>>> Obviously I could write some low-level network code to do this, but I'm
>>> wondering whether there are any existing utilities which could be glued
>>> together to provide this functionality.
>>>
>>
>> Quick and dirty approach might involve piping the ouput of tcpdump
>> into a grep for WoL packets destined to the large machine?
>
>
> Hmmm, yes - definitely in the QaD category though.
>
> I have a vague recollection of seeing a HowTo in the dim and distant 
> past which involved setting up eth0:1 with the target machine's 
> address and then watching for incoming traffic.  It was intended there 
> for automatic failover, but I think this is fairly similar.  Can't 
> find the relevant document now I want it though.
>
> John



Another suggestion : set up iptables to log any packets with destination 
IP of the other machine. Then just monitor the size of the log file.

Gabriel.



-- 
Gllug mailing list  -  Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug